Non-invasive assessment of tear film stability with a novel corneal topographer in Indian subjects

International Ophthalmology
Vipul BhandariNeeraj Shah

Abstract

The aim of the study is to investigate the applicability of a newly developed corneal topographer in assessing tear film stability in Indian subjects. A prospective comparative study of 25 Indian subjects with dry eyes attending a tertiary eye care clinic in South India and 25 normal control subjects was conducted. The diagnosis of dry eye was made based on ocular surface disease index questionnaire. Non-invasive tear film break-up time (NI-TBUT) was measured using a new method based on a corneal topographer equipped with modified scan software. The correlations between the NI-TBUT and the traditional fluorescein tear film break-up time (F-TBUT), Schirmer I test values were determined. A total of 50 patients (100 eyes) were included. The values of NI-TBUT were significantly lower than the values of F-TBUT in both the cases (NI-TBUT 5.78 ± 0.8 s and F-TBUT 7.56 ± 0.5 s; p < 0.02) and controls (NI-TBUT 11.66 ± 1 s and F-TBUT 12.92 ± 1.2 s; p < 0.01). NI-TBUT values were significantly lower than the corresponding F-TBUT values in the varying grades of dry eyes. The mean NI-TBUT values in mild dry eyes was 6.42 ± 0.2 s, moderate dry eyes was 4.70 ± 0.3 s and in severe dry eyes was 2.32 ± 1.2 s. There was a significant difference in...Continue Reading

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Citations

Jun 8, 2017·International Ophthalmology Clinics·Katherine Kostroun, Sumitra S Khandelwal
Apr 20, 2018·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Joaquín FernándezDavid P Piñero
Aug 23, 2020·Diagnostics·Doreen SchmidlLeopold Schmetterer
Mar 30, 2021·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Noémi TóthAdrienne Csutak
May 19, 2021·Translational Vision Science & Technology·Eisuke ShimizuKazuo Tsubota

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