Original articlePresumed Fuchs Heterochromic Iridocyclitis and Posner-Schlossman Syndrome: Comparison of Cytomegalovirus-Positive and Negative Eyes
Section snippets
Methods
This was a retrospective review of all consecutive patients with presumed PSS or FHI who were seen at the uveitis clinic of the Singapore National Eye Centre (SNEC) from January 1, 2004 to December 31, 2006, who had their aqueous analyzed for viral DNA following informed consent. All eyes with hypertensive anterior uveitis that were seen in the uveitis clinic were managed according to a standard protocol where all new cases, eyes with presumed PSS presenting during an attack, and all eyes with
Results
During this period, 103 eyes of 102 patients were eligible for inclusion in the study and all consented to aqueous sampling for CMV DNA. Sixty-seven eyes had features consistent with PSS (presumed PSS) and 36 had features consistent with FHI (presumed FHI). There were another seven eyes with presumed PSS seen at this time who were quiescent and hence were not included in the study. All the presumed FHI eyes were recruited. Hence, all the eyes with presumed FHI and 90.5% of those with presumed
Discussion
In this study, we found that 35 (52.2%) of presumed PSS eyes were CMV-positive. However, there were no clinical features that enabled the clinician to differentiate between the CMV-positive and the CMV-negative eyes. This could possibly be because presumed PSS is in fact a CMV uveitis, and our positive rate may in fact be an underestimation of the true ocular CMV infection rate. Six (8.9%) of the PSS eyes were positive only on repeat taps. The initial negative results could have been
Soon-Phaik Chee graduated from the National University of Singapore and became a Fellow of the Royal College of Ophthalmologists in 1990. She did her ocular inflammation fellowship in Moorfields Eye Hospital, United Kingdom. Dr Chee is currently the Senior Consultant and Head of the Ocular Inflammation and Immnology Service at the Singapore National Eye Centre, and the Associate Professor, Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore.
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Soon-Phaik Chee graduated from the National University of Singapore and became a Fellow of the Royal College of Ophthalmologists in 1990. She did her ocular inflammation fellowship in Moorfields Eye Hospital, United Kingdom. Dr Chee is currently the Senior Consultant and Head of the Ocular Inflammation and Immnology Service at the Singapore National Eye Centre, and the Associate Professor, Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore.