TITLE

Ability of spectral domain optical coherence tomography peripapillary retinal nerve fi ber layer thickness measurements to identify early glaucoma

AUTHOR(S)
Mansoori, Tarannum; Viswanath, Kalluri; Balakrishna, Nagalla
PUB. DATE
November 2011
SOURCE
Indian Journal of Ophthalmology;Nov2011, Vol. 59 Issue 6, p455
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To evaluate the ability of spectral domain optical coherence tomography (OCT) peripapillary retinal nerve fi ber layer thickness (RNFLT) parameters to distinguish normal eyes from those with early glaucoma in Asian Indian eyes. Design: Observational cross-sectional study. Materials and Methods: One hundred and seventy eight eyes (83 glaucoma patients and 95 age matched healthy subjects) of subjects more than 40 years of age were included in the study. All subjects underwent RNFLT measurement with spectral OCT/ scanning laser ophthalmoscope (SLO) aft er dilatation. Sensitivity, specifi city and area under the receiving operating characteristic curve (AROC) were calculated for various OCT peripapillary RNFL parameters. Results: The mean RNFLT in healthy subjects and patients with early glaucoma were 105.7 + 5.1 µm and 90.7 + 7.5 µm, respectively. The largest AROC was found for 12 o'clock- hour (0.98), average (0.96) and superior quadrant RNFLT (0.9). When target specifi city was set at > 90% and > 80%, the parameters with highest sensitivity were 12 o'clock -hour (91.6%), average RNFLT (85.3%) and 12 o' clock- hour (96.8 %), average RNFLT (94.7%) respectively. Conclusion: Our study showed good ability of spectral OCT/ SLO to diff erentiate normal eyes from patients with early glaucoma and hence it may serve as an useful adjunct for early diagnosis of glaucoma.
ACCESSION #
67520111

 

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