Review Article | Vol. 6, Issue 1 | Journal of Ophthalmology and Advance Research | Open Access

Manifestations and Treatment of Ocular Coccidioidomycosis: A Review of Literature

Nicholas A Chartrand1, Muhammed Jaafar1, Alexander R Shusko2*

1Department of Ophthalmology, The University of Arizona College of Medicine, Phoenix, Phoenix, AZ, USA
2Department of Ophthalmology, Mayo Clinic Arizona, Scottsdale, AZ, USA

*Correspondence author: Alexander R Shusko, MD, Mayo Clinic Arizona, Department of Ophthalmology, 13400 East Shea Boulevard Scottsdale, AZ 85259, USA; Email: [email protected]

Citation: Chartrand NA, et al. Manifestations and Treatment of Ocular Coccidioidomycosis: A Review of Literature. J Ophthalmol Adv Res. 2025;6(1):1-12.

Copyright© 2025 by Chartrand NA, et al. All rights reserved. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Received
10 January, 2024
Accepted
27 January, 2025
Published
05 February, 2025

Abstract

Purpose of Review: This review aims to summarize the epidemiology, manifestations and treatment of ocular coccidioidomycosis, a rare yet significant fungal infection that can severely impair vision.

Recent Findings: “Recent” is misleading as cases of ocular Coccidioidomycosis are rare and not frequently reported. A comprehensive literature search was performed in PubMed, EMBASE and Medline to identify case reports and retrospective reviews about the ocular manifestations of coccidioidomycosis. We identified 52 articles encompassing 63 case reports and collected data including age, gender, presentation, diagnosis, treatment, outcome and Best Corrected Visual Acuity (BCVA) at presentation and after treatment. Articles reviewed spanned from 1948 through 2022.

Summary: Average patient age was 38.7 years old, 60.3% of patients were male, 31.7% were female and gender was not disclosed 7.9% of cases. 19.0% patients had a disseminated Coccidioides infection and 4.8% of patients were immunocompromised at the time of infection. Clinical presentations of ocular coccidioidomycosis included scleritis, granulomatous lesions of the lid and retina, uveitis and endophthalmitis. 15.9% of patients progressed to enucleation. Climate change is correlated with an increased incidence of Coccidioides infections. Clinicians must maintain a high degree of suspicion for ocular coccidioidomycosis.

Keywords: Coccidioides; Valley Fever; Uveitis; Fungal Infection; Ophthalmology

Abbreviations

BCVA: Best Corrected Visual Acuity; CF: Counting Fingers; HM: Hand Motion; LP: Light Perception; NLP: No Light Perception; SD: Standard Deviation

Introduction

Coccidioidomycosis, commonly known as Valley Fever, is an infection caused by the fungus Coccidioides immitis or Coccidioides posadasii [1]. While most cases of coccidioidomycosis are self-limited, ocular complications are a rare yet serious manifestation of the disease that can lead to permanent vision loss [2]. Unfortunately, ocular coccidioidomycosis is often under-diagnosed and under-treated outside of endemic areas, which can delay appropriate management and result in poor outcomes [1,3]. The ocular manifestations of coccidioidomycosis are diverse and can include scleritis, uveitis, granulomatous lesions of the eyelid and retina and endophthalmitis. Given the severity of these complications, it is crucial to recognize and treat them in a timely and appropriate manner. In this paper, we will review the cases of ocular coccidioidomycosis found in the literature and focus on the medical and surgical treatment options available to manage this rare and challenging condition.

Methods

A comprehensive literature review was conducted on the databases PubMed, Ovid MEDLINE and EMBASE. Keywords included coccidioidomycosis, valley fever, ocular, orbit, ophthalmology, uveitis, iritis, iridocyclitis, vitritis and chorioretinitis. A representative search strategy is included in supplement 1. Inclusion criteria consisted of peer-reviewed case reports, retrospective/prospective case studies and reviews containing ocular manifestations of coccidioidomycosis. Additional articles not indexed in searched databases were identified from citations of reviewed articles. Title and abstract review yielded 52 articles that met the stated inclusion criteria. The chronicity of coccidioidomycosis infection was determined by the authors of each respective paper. There was no general consensus on the timeframe for acute vs. chronic infection. Visual acuity was recorded only for the affected eye unless otherwise noted.

Best Corrected Visual Acuity (BCVA) for each case was converted into logMAR, with non-numerical BCVA (e.g., Counting Fingers [CF], Hand Motion [HM], Light Perception [LP] and No Light Perception [NLP]) conversion as follows based on published literature: CF – 2.1, HM – 2.4, LP – 2.7, NLP – 3.0 [4,5]. A paired t-test was used to evaluate the difference in mean BCVA at presentation and after treatment in the cases that provided data at both time points.

Results

We identified 52 articles containing 63 case reports of coccidioidomycosis with ocular involvement in the literature. Demographic data are summarized in Table 1. The average patient age was 38.7 years old (SD 18.5, range: 2 weeks – 77 years). 38/63 (60.3%) of patients were male, 20/63 (31.7%) were female and gender was not disclosed in 5 cases (7.9%). Ocular involvement was unilateral in 44/63 cases (69.8%) and bilateral in 19/63 cases (30.2%). Active coccidioidomycosis infection was present in 48/63 patients (76.2%), prior infection in 12/63 patients (19.0%) and no status of systemic infection was given for 3/63 patients (4.8%). 12/63 (19.0%) patients had a disseminated Coccidioides infection. Three patients (4.8%) were immunocompromised at the time of infection. For each case report of ocular coccidioidomycosis, supplement 1 summarizes the age, gender, location, diagnosis, laterality, time from onset of symptoms to presentation, disease dissemination, treatment, patient immune status, BCVA at presentation, BCVA after treatment and length of follow-up.

The BCVA of patients with ocular coccidioidomycosis at presentation and after treatment are plotted in Fig. 1. Among the 18 case reports that provided both initial and post-treatment BCVA values, a paired t-test revealed no significant difference between the mean initial BCVA (1.32 logMAR) and the mean post-treatment BCVA (1.51 logMAR), with a p-value of 0.33.

Table 2 shows the diagnoses associated with ocular coccidioidomycosis and the treatments used by diagnosis. The most common diagnosis was chorioretinitis, with 15 cases (23.8%) of granulomatous chorioretinitis and 12 cases (19.0%) of non-granulomatous chorioretinitis. Other diagnoses include unspecified anterior uveitis (3.2%), granulomatous anterior uveitis (14.3%), non-granulomatous anterior uveitis (1.6%), cutaneous coccidioidomycosis (17.5%), endophthalmitis (6.3%), granulomatous conjunctivitis (1.6%), panuveitis (3.2%), retinitis (1.6%) and scleritis/episcleritis (7.9%). Of medical treatments, 25 patients (39.7%) received IV amphotericin B, 4 (6.3%) received intraocular amphotericin B, 5 (7.9%) received an IV azole, 20 (31.7%) received an oral azole, 1 (1.6%) received an intraocular azole. Surgical treatments included vitrectomy in 3 patients (4.8%), cutaneous surgery in 2 patients (3.2%) and enucleation in 10 patients (15.9%).

Figure 1: BCVA at presentation and after treatment.

Total Cases

63

Age (years)

38.7 ± 18.5 (.038-77)

Male

38 (60.3%)

Female

20 (31.7%)

Unknown Gender

5 (7.9%)

Immunocompromised

3 (4.8%)

Active Disease

48 (76.2%)

Past Disease

12 (19.0%)

Unclear Etiology

3 (4.8%)

Disseminated Disease

12 (19.0%)

Unilateral

44 (69.8%)

Bilateral

19 (30.2%)

BCVA Presentation (logMAR)

0.914 ± 1.609 (0.00-3.00)

BCVA After Treatment (logMAR)

1.609 ± 1.602 (0.00-3.00)

Table 1: Demographics.

Author

Year

 

 

Location

Age

Gender

Ocular Diagnosis

Unilateral or Bilateral

Time from onset of symptoms until presentation

Disseminated Disease?

Immuno-compromised?

Successful Treatment

BCVA Presentation

BCVA After Treatment

Length of Follow-up

Alexander20

1967

Bakersfield, California

19

F

Chorioretinitis

Unilateral

3 days

  

IV amphotericin B (total dose 4.3 g), prednisone.

CF

10.5/200

16 weeks

Bell21

1972

California

39

M

Granulomatous anterior uveitis

Unilateral

2 years

    

Enucleation

 

Bittencourt22

2022

Irvine, CA

  

Cutaneous

Unilateral

   

Urgent orbitotomy with incision and drainage of the abscess, followed by oral fluconazole (100 mg/day for 4 months).

   

Blumenkranz23

1980

San Joaquin Valley, California

57

M

Chorioretinitis

Unilateral

6 weeks

  

Intrathecal miconazole therapy, 15 mg three times per week, followed by gradually increasing intravenous and intrathecal doses of amphotericin B. Intraventricular therapy with amphotericin B was also used, along with intrathecal administration of miconazole.

 

20/20

3 months

Blumenkranz

1980

San Joaquin Valley, California

24

M

Granulomatous chorioretinitis

Bilateral

1 week

  

Amphotericin B therapy IV (total dose 1750 mg).

20/50

20/30

11 months

Blumenkranz24

1980

Bakersfield, California

40

M

Chorioretinitis

Unilateral

1 week

  

Incision and drainage of lid granuloma, intravenous and intrathecal amphotericin and miconazole for meningeal coccidioidomycosis.

20/20

  

Blumenkranz

1980

Bakersfield, California

48

M

Granulomatous chorioretinitis

Unilateral

3 months

  

Intravenous and intrathecal amphotericin was initiated. The patient was subsequently given oral ketoconazole. The herpes was treated with topical idoxuridine, polysporin, and atropine 1%.

20/70

  

Boyden25

1971

San Joaquin Valley, California

28

M

Chorioretinitis

Bilateral

9 months

Y

     

Brown26

1957

San Joaquin Valley, California

19

M

Chorioretinitis

Unilateral

3 weeks

    

20/200

4 months

Brown

1958

Houston, Texas

24

F

Granulomatous anterior uveitis

Unilateral

 

Y

 

Topical atropine and cortisone drops plus warm compresses.

   

Chandler27

1972

Southwestern U.S.

25

M

Granulomatous chorioretinitis

Bilateral

3 weeks

Y

Y

IV amphotericin B.

   

Char28

2012

Central Valley, California

10

F

Chorioretinitis

Unilateral

1 month

  

Enucleation.

NLP

Enucleation

 

Cheng29

2012

Santa Clarita, California

55

M

Endophthalmitis

Unilateral

1 month

  

Vitrectomy, intravitreal voriconazole, IV voriconazole 4mg/kg q12hr, after discharge oral voriconazole 4mg/kg BID

20/60

20/25

4 months

Coba30

2021

 

50

M

Chorioretinitis

Bilateral

 

Y

 

800mg fluconazole daily.

   

Conan31

1950

 

30

F

Retinitis

Unilateral

 

Y

 

None

   

Cunningham32

1998

San Joaquin Valley, California

32

M

Granulomatous anterior uveitis

Unilateral

1 month

  

IV amphotericin B and oral fluconazole (outpatient)

20/200

  

Cunningham

1998

 

31

F

Granulomatous chorioretinitis

Bilateral

5 months

  

IV and intrathecal amphotericin B for 3 weeks, followed by oral fluconazole

 

20/20

 

Cutler33

1978

Southern California

29

M

Granulomatous anterior uveitis

Unilateral

6 months

  

The patient was treated with intravenous amphotericin B, and an anterior-chamber injection of amphotericin. However, these treatments were unsuccessful in saving the eye, and the patient underwent enucleation.

LP

Enucleation

 

Dworak34

2016

Patient lived in Chicago and traveled through Southern U.S.

33

M

Cutaneous

Unilateral

3 weeks

  

Oral itraconazole 200 mg twice a day and topical application of bacitracin/neomycin/polymyxin B ointment three times a day to the affected area for 10 weeks

20/20

  

Faulkner35

1962

San Joaquin Valley, California

33

F

Cutaneous

Unilateral

1 week

  

IV amphotericin B for 7 months.

20/20, J1

  

Gabriellan36

2010

Arizona

46

M

Panuveitis

Bilateral

7 months

Y

 

Voriconazole 200 mg PO QD

20/40 OD, 20/25 OS

20/25 OU

2 weeks

Glasgow37

1987

Logan, Arizona

12

F

Granulomatous chorioretinitis

Bilateral

7 weeks

Y

     

Golden38

1986

Arizona

2 Weeks

 

Chorioretinitis

Unilateral

7 weeks

  

1mg/kg/day amphotericin B, 20 mg total administered

20/20

  

Green39

1967

Arizona

51

M

Granulomatous chorioretinitis

Bilateral

4 months

  

Amphotericin B 4.5 g IV, 4.2g intrathecally

   

Hwang40

2006

California

64

M

Nongranulomatous anterior uveitis

Unilateral

1 week

  

Prednisolone acetate 1% every hour and cyclopentolate hydrochloride 1% 3 times a day O.S. followed by brimonidine tartrate 0.15% 3 times a day O.S.

20/30

  

Irvine41

1968

Lancaster, California

73

M

Cutaneous

Unilateral

6 months

  

IV amphotericin B (1965 mg)

   

Jou42

1995

 

36

M

Cutaneous

Unilateral

   

Amphotericin B 50mg QD for 3 weeks, fluconazole 800mg for maintenance after discharge.

20/20

  

Lamer43

1982

Bolivia

26

F

Granulomatous chorioretinitis

Unilateral

2 months

  

Amphotericin B 20-50mg/day for 1 month.

20/70

20/800

1 month

Levitt44

1948

British West Africa

20

M

Chorioretinitis

Unilateral

2 weeks

  

None

20/30

  

Lijo-Pavia45

1949

 

28

M

Cutaneous

Unilateral

    

20/70

20/800

 

Ling18

2017

Nevada

33

F

Endophthalmitis

Unilateral

5 months

  

3 intravitreal injections of amphotericin B, IV liposomal amphotericin B, fluconazole, oral Posaconazole, and 7 postop weekly intravitreal injections of amphotericin B, followed by surgical intervention consisting of temporary keratoprosthesis implantation, anterior segment reconstruction, removal of a cyclitic membrane and the crystalline lens, pars plana vitrectomy, pars plana Ahmed drainage device placed in the vitreous cavity, and penetrating keratoplasty. Transscleral cyclophotocoagulation was also performed to control IOP.

HM

20/200

15 months

Lovekin46

1951

Arizona

30

F

Granulomatous chorioretinitis

Bilateral

2 weeks

      

Luttrull47

1995

Southern California

34

M

Granulomatous anterior uveitis

Unilateral

2 days

  

Oral fluconazole (200 mg) daily and IV amphotericin (systemic) on an increasing dose schedule was started. The iridocyclitis respond well and the vision was 20/20 within one week. after a month, serum creatinine concentration rose to 2.0 mg/dl and IV amphotericin was stopped at a total dose of 600 mg. Oral fluconazole was increased to 800 mg per day afterward (per day). Since then, pt constitutional symptoms improved within 48 hours and within one week choroidal lesion became inactive and a small atrophic chorioretinal scar was left.

20/30

20/20

3 months

Magrath48

2010

 

76

F

Granulomatous chorioretinitis

Bilateral

   

Some improvement on fluconazole (400mg), then changed to voriconazole which gave her best results.

20/100 OD, 20/40 OS

20/60 OD, 20/20 OS

 

Maguire49

1994

Southwestern U.S.

65

F

Granulomatous conjunctivitis

Unilateral

   

Topical amphotericin once every 2 hours and was then stopped after symptoms improved, and patient was kept on fluconazole only (400 mg twice a day).

20/25

  

Michelson50

1983

Mesa, Arizona

73

M

Granulomatous chorioretinitis

Unilateral

2 months

  

Patient was started on intrathecal amphotericin B after symptoms worsened but did not mention what happened afterwards.

6/12-2

  

Mondino51

2007

 

64

M

Granulomatous anterior uveitis

Unilateral

   

Oral fluconazole, intravenous amphotericin B, pars plana vitrectomy and lensectomy, initially everything was normal. However, infiltrate reformed in the anterior chamber. Tissue plasminogen activator and intracameral amphotericin B were given, followed by another pars plana vitrectomy. At 1 month after the second vitrectomy, the eye was enucleated for intractable pain.

 

Enucleation

 

Moorthy3

1994

Southern California

53

F

Granulomatous anterior uveitis

Unilateral

3 months

  

Enucleation

 

Enucleation

 

Moorthy

1994

Southern California

45

M

Granulomatous anterior uveitis

Unilateral

3 weeks

  

Intracameral amphotericin B, and oral fluconazole 400 mg BID.

HM

CF

couple months

Moorthy

1994

Southern California

63

M

Granulomatous anterior uveitis

Unilateral

6 months

  

Oral itraconazole 200 mg daily.

CF

HM

 

Nordstorm52

2019

Southern California

64

M

Chorioretinitis

Unilateral

     

Enucleation

 

Nordstorm

2019

Logan, Arizona

12

F

Chorioretinitis

Bilateral

 

Y

     

Nordstorm

2019

 

27

M

Granulomatous chorioretinitis

Unilateral

At presentation

Y

 

Intravitreal amphotericin B deoxycholate 5micro g/0.1 ml every 3 days.

LP

  

Olavarria53

1971

Bakersfield, California

37

M

Granulomatous chorioretinitis

Bilateral

At presentation

      

Perry54

1960

 

56

M

Cutaneous

Unilateral

   

Four months of amphotericin B therapy.

   

Pettit55

1967

San Fernando Valley, California

41

M

Anterior Uveitis

Unilateral

Several weeks

   

20/300

Enucleation

 

Quinlan56

2020

Arizona

40

M

Granulomatous chorioretinitis

Unilateral

1 day

  

Voriconazole 200 mg

   

Reed57

2021

Southern California

9

M

Cutaneous

Unilateral

10 days

  

IV amphotericin liposomal, and systemic fluconazole.

   

Reed19

2013

Santa Clarita, California

55

M

Endophthalmitis

Unilateral

Diagnosed after 120 days

  

16 intravitreal antifungal (amphotericin and voriconazole) injections and three vitrectomies, as well as lensectomy and penetrating keratoplasty. Patient was also on 350 mg twice daily of voriconazole and then was transitioned to 800 mg of oral fluconazole daily.

20/200

20/25

13 months

Rixford58

1896

San Francisco, California

40

M

Endophthalmitis

Unilateral

6 years

  

Enucleation

 

Enucleation

 

Shields59

2019

Palo Alto, California

34

F

Chorioretinitis

Bilateral

 

Y

 

IV fluconazole and amphotericin B and then was transition to 200 mg of oral fluconazole per day.

20/20 OU

  

Stone60

1993

Seattle Washington, patient grew up in Arizona

26

M

Anterior Uveitis

Unilateral

22 years

  

None

CF

Enucleation

 

Toomey61

2019

Southern California

48

F

Panuveitis

Unilateral

3 weeks

 

Y

Intravenous fluconazole and intravitreal voriconazole.

HM

LP

5 months

Trowbridge62

1952

San Joaquin Valley, California

22

F

Cutaneous

Bilateral

1 week

      

Trowbridge

1952

San Joaquin Valley, California

52

F

Episcleritis

Bilateral

4 weeks

   

20/20

  

Trowbridge

1952

San Joaquin Valley, California

34

M

Episcleritis

Bilateral

1 month

    

20/20

1 month

Trowbridge

1952

Fresno, California

  

Episcleritis

Bilateral

3 days

      

Trowbridge

1952

Fresno, California

18

M

Episcleritis

Bilateral

At presentation

      

Trowbridge

1952

Fresno, California

  

Scleritis

Unilateral

 

Y

     

Ugurlu63

2005

Arizona

77

F

Cutaneous

Unilateral

2 weeks

Y

Y

Oral fluconazole 400 mg BID and as symptoms improved, deceased to 200 mg BID and then 200 mg QD due to intolerance. Then switched to oral itraconazole.

20/30

  

Vasconcelos-Santos64

2010

Southern California

64

M

Granulomatous chorioretinitis

Unilateral

18 months

  

Intravitreal amphotericin B and oral fluconazole. Led to phthisis, later required enucleation.

20/400

Enucleation

 

Wood65

1967

San Joaquin Valley, California

12

M

Cutaneous

Unilateral

At presentation

   

20/20

  

Zakka66

1978

Los Angeles, California

37

M

Granulomatous chorioretinitis

Bilateral

1 week

      

Table 2: Summary of ocular coccidioidomycosis case presentations.

Diagnosis

Number of Cases

IV Amphotericin

IV Azole

Oral Azole

Vitrectomy

Intraocular Azole

Intraocular Amphotericin

Cutaneous surgery

Enucleation

Topical Steroids

No Treatment

Anterior Uveitis

2

0

0

0

0

0

0

0

1

0

0

Chorioretinitis

12

5

3

2

0

0

0

1

2

1

2

Cutaneous

11

5

0

4

0

0

0

1

0

0

0

Endophthalmitis

4

1

1

2

2

1

2

0

1

0

0

Granulomatous anterior uveitis

9

5

0

5

1

0

1

0

4

1

2

Granulomatous chorioretinitis

15

9

0

5

0

0

1

0

1

0

1

Granulomatous conjunctivitis

1

0

0

1

0

0

0

0

0

0

0

Non-granulomatous anterior uveitis

1

0

0

0

0

0

0

0

0

1

0

Panuveitis

2

0

1

1

0

1

0

0

0

0

0

Retinitis

1

0

0

0

0

0

0

0

0

0

1

Scleritis/episcleritis

5

0

0

0

0

0

0

0

0

0

0

Total

63

25

5

20

3

2

4

2

9

3

6

Table 3: Summary of presentations and treatments for ocular coccidioidomycosis.

Discussion

Epidemiology of Coccidioidomycosis

Coccidioidomycosis is endemic to the arid and semi-arid regions of the southwestern United States, with California and Arizona accounting for the majority of reported cases in the country [6]. Outside of the United States, Valley Fever also affects parts of Mexico, Central and South America [7,8]. Coccidioidomycosis has two species in North American: C. immitis and C. posadaii. C. immitis is predominantly found in California while C. posadasii is found in other regions of United States. Phenotypically and clinically the two species are identical and can only be distinguished by molecular methods.

The incidence of coccidioidomycosis infections is increasing, with age-adjusted incidence rates increasing nearly 8 times from 2000-2018 in California [9]. The incidence of ocular involvement of Coccidioides infections is unknown, but disseminated coccidioidomycosis is estimated to occur in 0.5-2% of cases [10].

The geographic distribution of the disease may also be expanding in the United States, as more states face drought and extreme weather due to climate change [11]. Temperature is critical in both the mutation and development of the fungi, as it is hypothesized that Coccidioides ssp. thrive in dry and hot seasons by growing in the sterilized top layer of soil without competition from other microorganisms. For example, Washington state recently reported evidence of cases of coccidioidomycosis from strains endemic to the state, where it was not previously known to occur. A new niche for the fungi was already established or is establishing in Washington state. In addition to Washington, the incidence of coccidioidomycosis has been increasing in other Southwestern states such as Utah, New Mexico and Nevada [12-16].

Clinical Presentation and Diagnosis of Ocular Coccidioidomycosis

This study describes 63 case reports of ocular manifestations of coccidioidomycosis. While chorioretinitis was the most common manifestation of ocular coccidiomycosis representing 43% of patient presentations, the fungus can present as a wide variety of pathologies including cutaneous lesions, conjunctivitis, scleritis/episcleritis, uveitis and endophthalmitis. Active infection with the fungus was present in 76.2% of patients, while 19.0% of patients had a history of chronic infection. Therefore, coccidioidomycosis should be considered as a potential etiology for any new inflammatory ocular or orbital lesion in patients with a history of coccidioidomycosis infection or concomitant systemic symptoms indicative of pulmonary or disseminated infection, particularly among individuals residing in or recently visiting endemic regions.

Ocular manifestations of coccidioidomycosis are thought to result from hematogenous spread during disseminated fungal infection. Primary infection typically occurs through inhalation of the fungus, causing an acute pulmonary infection accompanied by fever and malaise that usually resolves spontaneously. However, chronic or disseminated infection may occur, especially in immunocompromised and pregnant patients, leading to spread of the fungus to the skin and bones. Conversely, some patients may present with only ocular symptoms, such as blurriness or inflammation, without any constitutional symptoms. This fact highlights the need to consider ocular coccidioidomycosis in the differential diagnosis of patients with ocular symptoms in an endemic region, even in the absence of other symptoms or signs of disseminated infection. It is especially crucial to consider this diagnosis in patients with a recent acute pulmonary infection, chronic unexplained cough or those who have recently traveled through an endemic area.

Diagnosis of Coccidioidomycosis is difficult as the systemic systems are ambiguous and requires a high degree of suspicion and knowledge from the clinician. General symptoms include cough, fatigue and fever but over half of Coccidioides infections are asymptomatic or minimally symptomatic. Other less common signs and symptoms include night sweats, rash, weight loss and headaches. Skin manifestations should raise suspicion for Coccidioides infection such as erythema nodosum and erythema multiforme.

Laboratory testing is crucial for proper diagnosis and treatment of Coccidioidomycosis. Serological testing includes Enzyme Immunoassay (EIA) for Immunoglobulin (Ig)M and (Ig)G. If the initial EIA is positive, many commercial tests will reflex to immunodiffusion antibody tests. EIA tests are more sensitive but less specific whereas immunodiffusion tests are less sensitive but more specific. Immunodiffusion testing can be quantified and expressed as a titer. Quantifiable data is useful for monitoring treatment response. Limitations of serologic include the development of serum antibodies against Coccidioides tends to trail symptoms by a few weeks. Negative EIA testing does not exclude Coccidioidomycosis and should be re-tested later if suspicion remains high or a diagnosis is not found. A common but frustrating situation arises when the EIA are positive, but the immunodiffusion is negative. Treatment should be based on the clinical picture and degree of suspicion for Coccidioidomycosis. Complement Fixation (CF) is another method to detect the presence of Coccidioidomycosis in fluids other than serum, such as CSF. CF provides a titer result that again is useful for monitoring response to treatment. Microscopic examination of bodily fluids, such as respiratory secretions or aqueous fluid, would also provide diagnostic evidence of Coccidioides infection. Culture of fluids for coccidioidomycosis are notoriously difficult to handle in an outpatient setting and is generally reserved for patients in a hospital setting. Lastly, Polymerase Chain Reaction (PCR) can be used and is highly specific for detection of Coccidioidomycosis.

The prognosis of infection is poor, with 15.9% of patients progressing to enucleation and most patients having decreased visual acuity after treatment. Although there was no significant difference in BCVA at presentation and post treatment, Fig. 1. shows a divergence of outcomes. Nearly all patients who presented with a visual acuity of 20/200 (logMAR 1.0) or better had an improvement in BCVA after treatment. On the other hand, most patients who presented with CF or worse vision remained with non-numerical visual acuity after treatment and many progressed to enucleation.

Treatment of Ocular Coccidioidomycosis

Treatment centers on quelling the proliferation of fungal material and minimizing the inflammatory response. The most common treatment identified in case reports was Amphotericin B, which licensed in the United States in 1959 [17]. Despite poor ocular penetration requiring high doses associated with significant side effects, such as nephrotoxicity, this was the primary treatment of systemic fungal infections until the later development of azole antifungals (Around the 1980s). Currently azoles, such as fluconazole, are now preferred due to excellent penetration into the eye and a more favorable side effect profile. Intraocular injection of antifungals was used less commonly but was the second line therapy for intraocular coccidioidomycosis. Surgical intervention is used sparingly as classic teaching says disruption of the eye leads to seeding of the fungus in an area that was previously unaffected. However, some cases successfully used a combined medical and surgical approach to treat complicated cases, such as endophthalmitis [18,19].

There is no standardized treatment for ocular coccidioidomycosis. The mainstay of treatment for systemic coccidioidomycosis is fluconazole. For treatment resistant or disseminated cases of ocular coccidioidomycosis, Posaconazole, which also has excellent intraocular penetration or Amphotericin B may be required for treatment. 27 patients (42.9%) with intraocular coccidioidomycosis in the review series had parenteral antifungals in addition to intraocular or surgical treatments. Cutaneous, periorbital coccidioidomycosis is treated well with fluconazole (4 patients 6.3%). Intraocular injection of antifungals agents such as voriconazole or amphotericin B are used in treatment resistant cases; 6 patients (9.5%) with intraocular coccidioidomycosis in the review series had intravitreal antifungals.

Surgical intervention for coccidioidomycosis is not performed routinely. Some experts believe coccidioidomycosis affects either the choroid and retina or the aqueous humor, but it is rarely present in both anatomical locations at the time of diagnosis due to the blood retinal barrier. It is theorized that surgical intervention allows for inoculation of fungal particles into all structures of the eye [1]. There are cases of successful combined medical and surgical management to remove foci of suspected coccidioidomycosis or vitrectomy to remove fungal particles.

Surgical intervention for coccidioidomycosis is not performed routinely. Some experts believe coccidioidomycosis affects either the choroid and retina or the aqueous humor, but it is rarely present in both anatomical locations at the time of diagnosis due to the blood retinal barrier. It is theorized that surgical intervention allows for inoculation of fungal particles into all structures of the eye [1]. There are cases of successful combined medical and surgical management to remove foci of suspected coccidioidomycosis or vitrectomy to remove fungal particles.

Key Points

  • Coccidioidomycosis area of effect is growing as climate changes increase surface temperature
  • High suspicion and knowledge of Coccidioidomycosis ophthalmic pathology is needed to arcuately diagnosis this blinding fungus
  • Treatment courses are varied and require frequent observation and adjustment for extended periods of time

Conflict of Interest

The authors declare no potential conflicts of interest with respect to the research, authorship and/or publication of this article.

Acknowledgments

The authors declare they had no assistance with study design, data collection, data analysis or manuscript preparation.

Funding Details

No funding was received for this review. No other financial disclosures of all authors.

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Nicholas A Chartrand1, Muhammed Jaafar1, Alexander R Shusko2*

1Department of Ophthalmology, The University of Arizona College of Medicine, Phoenix, Phoenix, AZ, USA
2Department of Ophthalmology, Mayo Clinic Arizona, Scottsdale, AZ, USA

*Correspondence author: Alexander R Shusko, MD, Mayo Clinic Arizona, Department of Ophthalmology, 13400 East Shea Boulevard Scottsdale, AZ 85259, USA; Email: [email protected]

Nicholas A Chartrand1, Muhammed Jaafar1, Alexander R Shusko2*

1Department of Ophthalmology, The University of Arizona College of Medicine, Phoenix, Phoenix, AZ, USA
2Department of Ophthalmology, Mayo Clinic Arizona, Scottsdale, AZ, USA

*Correspondence author: Alexander R Shusko, MD, Mayo Clinic Arizona, Department of Ophthalmology, 13400 East Shea Boulevard Scottsdale, AZ 85259, USA; Email: [email protected]

Copyright© 2025 by Chartrand NA, et al. All rights reserved. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Chartrand NA, et al. Manifestations and Treatment of Ocular Coccidioidomycosis: A Review of Literature. J Ophthalmol Adv Res. 2025;6(1):1-12.