Acanthamoeba keratitis - a six year epidemiological review from a tertiary care eye hospital in south India.
OBJECTIVE
This study analyses the prevalence, demography, predisposing factors and seasonal variation of Acanthamoeba keratitis.


METHODS
A retrospective review of all cases presenting with keratitis at the cornea clinic, Aravind Eye Hospital, Coimbatore, from August 1997 to July 2003, was done for screening patients with a provisional diagnosis of Acanthamoeba keratitis. Their records were further analyzed for microbiological details. Cases with culture proven Acanthamoeba keratitis were included for epidemiological analysis.


RESULTS
From a total of 4519 patients who attended cornea clinic 32 (33 eyes) patients were confirmed to be positive for Acanthamoeba keratitis. Twenty cases (62.5%) were males. Majority (18; 54.2%) of the Acanthamoeba keratitis eyes reported corneal trauma by solid objects. No peak period was observed in a year, as the number of cases was almost uniform in all months.


CONCLUSIONS
This study indicates the increasing prevalence of Acanthamoeba keratitis among non-contact lens users in this region during the 6-year period.
Manikandan
P
P
Department of Microbiology, Aravind Eye Care System, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Avinashi Road, Coimbatore- 641 014, India.
Bhaskar
M
M
Revathy
R
R
John
R K
RK
Narendran
V
V
Panneerselvam
K
K