Actinomycosis in Ophthalmology 

  • Author: Manolette R Roque, MD, MBA; Chief Editor: Hampton Roy Sr, MD   more...
 
Updated: May 10, 2010
 

Background

The bacterial order Actinomycetales comprises 3 families: Actinomycetaceae, Mycobacteriaceae, and Streptomycetaceae. The genus Actinomyces, a member of the family Actinomycetaceae, grows as a fragile branching filament that tends to fragment into bacillary and coccoid forms producing chains of either conidia or arthrospores (see the image below).[1, 2]

Actinomyces israelii. (The image is labeled.) Actinomyces israelii. (The image is labeled.)

Actinomyces israelii species is a gram-positive, cast-forming, non–acid-fast, non–spore-forming anaerobic bacillus that is difficult to isolate and identify; this is shown in the image below.

Actinomyces israelii (non–spore-forming, gram-posiActinomyces israelii (non–spore-forming, gram-positive bacilli). Courtesy of Medical Education Information Center, Department of Pathology and Laboratory Medicine, The University of Texas-Houston Medical School.

Its filamentous growth and mycelialike colonies have a striking resemblance to fungi. They are soil organisms, often found in decaying organic matter (eg, wet hay, straw). It is primarily a commensal microbe found in normal oral cavities, in tonsillar crypts, in dental plaques, and in carious teeth.[3, 4, 5, 6]

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Pathophysiology

Keratitis

Most reported cases of Actinomyces keratitis (keratoactinomycosis) are caused by A israelii. It is characterized by a dry ulceration with central necrosis, surrounded by a gutter of demarcation, usually accompanied by iritis and hypopyon. In severe cases, descemetocele and perforation may occur.

A primary corneal ulcer attributable to Actinomyces species is rare and usually follows corneal trauma.[7] A rare case of keratoactinomycosis developing in the absence of any known ocular trauma was reported in Kuala Lumpur.

Canaliculitis

Primary chronic canaliculitis is an uncommon problem caused by A israelii (Streptothrix).

McKellar presented a 10-year-old girl with a 6-month history of intermittent conjunctivitis and discharge from her pouted left lower punctum. Topical treatment with chloramphenicol/polymyxin sulphate failed despite a diagnosis of probable A israelii infection confirmed by microbiology. Surgical exploration revealed a canalicular diverticulum and 3 canaliculiths demonstrating solid casts of Actinomycetes on histologic examination. A therapeutic triad of punctoplasty, cast removal, and adjunctive topical cefazolin resulted in resolution.[8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]

Other Ocular Involvement

Actinomycetes have been described as causative organisms in conjunctivitis, blepharitis, dacryocystitis, postsurgical endophthalmitis, and infected porous orbital implant. Cervico-facial actinomycosis has also been reported.

Postoperative endophthalmitis

Acute postoperative endophthalmitis caused by Actinomyces neuii after uncomplicated phacoemulsification with posterior chamber intraocular lens implant in a 58-year-old male has been reported. On postoperative day 6, he presented with pain, redness, and decreased visual acuity. Chronic endophthalmitis by Actinomyces neuii subspecies anitratus after uneventful phacoemulsification with implantation of a foldable posterior chamber intraocular lens in a 75-year-old man has been reported as well. Four weeks after surgery, anterior chamber and vitreous cellular debris developed in this eye.[20]

Endophthalmitis, attributable to Actinomyces viscosus, developed in a 78-year-old man after cataract surgery. Postoperative endophthalmitis with this organism is a rare occurrence. Inflammation was characterized by anterior segment and vitreous cellular debris in cases of chronic postoperative endophthalmitis associated with Actinomyces species.[21]

Endogenous endophthalmitis has been reported with Actinomyces israelii.[22]

Orbital actinomycosis

Painful ophthalmoplegia resulting from orbital actinomycosis has been reported.[23, 24, 25, 26, 27]

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Epidemiology

Frequency

United States

Primary chronic canaliculitis is an uncommon problem that can be overlooked; however, it may account for approximately 2% of all tearing problems. Actinomycosis may form in up to 2% of all lacrimal disease. Its occurrence is probably much less in other areas.

International

Actinomycosis occurs worldwide, with a likelihood for higher prevalence rates in areas with low socioeconomic status.

Race

No racial predilection exists.

Sex

No sexual predisposition exists.

Age

Actinomycosis can affect people of all ages. No age predisposition exists.

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Contributor Information and Disclosures
Author

Manolette R Roque, MD, MBA  General Manager, Full Partner, Ophthalmic Consultants Philippines Co.; President and CEO, Chief Refractive Surgeon, EYE REPUBLIC Ophthalmology Clinic; Section Chief, Ocular Immunology and Uveitis, Department of Ophthalmology, Asian Hospital and Medical Center; Section Chief, Ocular Immunology and Uveitis, International Eye Institute, St Luke's Medical Center Global City; Senior Eye Surgeon, The LASIK Surgery Clinic; Director, AMC Eye Center, Alabang Medical Center; President, Philippine Ocular Inflammation Society

Manolette R Roque, MD, MBA is a member of the following medical societies: American Academy of Ophthalmic Executives, American Academy of Ophthalmology, American Society of Cataract and Refractive Surgery, American Society of Ophthalmic Administrators, American Uveitis Society, International Ocular Inflammation Society, Philippine Medical Association, Philippine Ocular Inflammation Society, and Philippine Society of Cataract and Refractive Surgery

Disclosure: Nothing to disclose.

Coauthor(s)

Barbara L Roque, MD  Full Partner, Ophthalmic Consultants Philippines Co; Service Chief, Pediatric Ophthalmology and Strabismus, Department of Ophthalmology, Asian Hospital and Medical Center; Active Staff, International Eye Institute, St. Luke's Medical Center Global City; Visiting Ophthalmologist, AMC Eye Center, Alabang Medical Center

Barbara L Roque, MD is a member of the following medical societies: American Academy of Ophthalmology, American Society of Cataract and Refractive Surgery, Philippine Academy of Ophthalmology, and Philippine Society of Cataract and Refractive Surgery

Disclosure: Nothing to disclose.

C Stephen Foster, MD, FACS, FACR, FAAO  Clinical Professor of Ophthalmology, Harvard Medical School; Consulting Staff, Department of Ophthalmology, Massachusetts Eye and Ear Infirmary; Founder and President, Ocular Immunology and Uveitis Foundation, Massachusetts Eye Research and Surgery Institution

C Stephen Foster, MD, FACS, FACR, FAAO is a member of the following medical societies: Alpha Omega Alpha, American Academy of Ophthalmology, American Association of Immunologists, American College of Rheumatology, American College of Surgeons, American Federation for Clinical Research, American Medical Association, American Society for Microbiology, American Uveitis Society, Association for Research in Vision and Ophthalmology, Massachusetts Medical Society, Royal Society of Medicine, and Sigma Xi

Disclosure: Nothing to disclose.

Specialty Editor Board

Jorge G Camara, MD  Professor of Ophthalmology, Department of Surgery and Director of Fellowship Training Program in Ophthalmic Plastic and Reconstructive Surgery for Countries Served by the Aloha Medical Mission, University of Hawaii John A Burns School of Medicine

Jorge G Camara, MD is a member of the following medical societies: American Academy of Ophthalmology, American Medical Association, and American Society of Ophthalmic Plastic and Reconstructive Surgery

Disclosure: Nothing to disclose.

Simon K Law, MD, PharmD  Assistant Professor of Ophthalmology, Jules Stein Eye Institute; Chief of Section of Ophthalmology Surgical Services, Department of Veterans Affairs Healthcare Center, West Los Angeles

Simon K Law, MD, PharmD is a member of the following medical societies: American Academy of Ophthalmology, American Glaucoma Society, and Association for Research in Vision and Ophthalmology

Disclosure: Nothing to disclose.

Mark T Duffy, MD, PhD  Consulting Staff, Division of Oculoplastic, Orbito-facial, Lacrimal and Reconstructive Surgery, Green Bay Eye Clinic, BayCare Clinic; Medical Director, Advanced Cosmetic Solutions, A BayCare Clinic

Mark T Duffy, MD, PhD is a member of the following medical societies: American Academy of Ophthalmology, American Medical Association, American Society of Ophthalmic Plastic and Reconstructive Surgery, Sigma Xi, and Society for Neuroscience

Disclosure: Allergan - Botox Cosmetic Consulting fee Consulting

Lance L Brown, OD, MD  Ophthalmologist, Affiliated With Freeman Hospital and St John's Hospital, Regional Eye Center, Joplin, Missouri

Disclosure: Nothing to disclose.

Chief Editor

Hampton Roy Sr, MD  Associate Clinical Professor, Department of Ophthalmology, University of Arkansas for Medical Sciences

Hampton Roy Sr, MD is a member of the following medical societies: American Academy of Ophthalmology, American College of Surgeons, and Pan-American Association of Ophthalmology

Disclosure: Nothing to disclose.

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Canaliculitis of the left lower lid. Courtesy of Peter Rubin, MD, Director, Eye Plastics Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School.
Canaliculitis of the right upper lid. Courtesy of Peter Rubin, MD, Director, Eye Plastics Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School.
A pediatric patient with canaliculitis. Courtesy of Peter Rubin, MD, Director, Eye Plastics Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School.
A patient presenting with pseudocanaliculitis secondary to a chalazion. Courtesy of Peter Rubin, MD, Director, Eye Plastics Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School.
A patient presenting with pseudocanaliculitis secondary to a chalazion. Courtesy of Peter Rubin, MD, Director, Eye Plastics Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School.
Actinomyces israelii (non–spore-forming, gram-positive bacilli). Courtesy of Medical Education Information Center, Department of Pathology and Laboratory Medicine, The University of Texas-Houston Medical School.
Actinomyces israelii. (The image is labeled.)
Actinomycosis.
 
 
 
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