A study of normative data for automated perimetry in Indian population
Journal Title: Medpulse International Journal of Ophthalmology - Year 2018, Vol 7, Issue 2
Abstract
Aim: To formulate normative data and to increase domain knowledge of normative values for automated perimetry in Indian population of different age groups. Materials and Methods:Cross-sectional study conducted on patients receiving outpatient care in a span of 2 years, which included 386 healthy normal patients (772 eyes) with vision 6/6 unaided or after refractive correction. The patients were tested with 30-2 SITA FAST threshold algorithm on Humphrey Field Analyzer Model no: 745i.Normative data was calculated on basis of age group ranging from 19-75 years in every decade. Normal values were formulated on basis of perimetry performed on normal patients. The variables tested included age, gender, unaided vision, best corrected vision, test duration, fixation losses, false positive and false negative errors, foveal threshold, visual field index, mean deviation and pattern standard deviation of both eyes. Results: To our knowledge, this is the first study to formulate normative data for automated perimetry in Indian population. The right eye foveal fixation in patients of all age groups in our study was 30.84 dB ± 3.34 and the left eye foveal fixation in patients of all age groups was 30.72 dB ± 3.13. The right eye mean deviation of the entire sample size showed a median of -2.4 and the left eye mean deviation of the entire sample size showed a median of -2.32. The right eye pattern standard deviation in patients of all age groups was 1.82 ± 0.57 dB and the left eye pattern standard deviation in patients of all age groups was 1.78 ± 0.49 dB.
Authors and Affiliations
Shrikant Deshpande, Neeraj Israni, Meenal Kanhere
Keywords
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