Association of cataract and sun exposure in geographically diverse populations of India: The CASE study. First Report of the ICMR-EYE SEE Study Group

Vashist, P, Tandon, R, Murthy, G, Barua, CK, Deka, D, Singh, S, Gupta, V, Gupta, N, Wadhwani, M, Singh, R and Vishwanath, K. 2020. Association of cataract and sun exposure in geographically diverse populations of India: The CASE study. First Report of the ICMR-EYE SEE Study Group. [Online]. PLOS ONE. Available from: https://doi.org/10.1371/journal.pone.0227868.s002

Vashist, P, Tandon, R, Murthy, G, Barua, CK, Deka, D, Singh, S, Gupta, V, Gupta, N, Wadhwani, M, Singh, R and Vishwanath, K. Association of cataract and sun exposure in geographically diverse populations of India: The CASE study. First Report of the ICMR-EYE SEE Study Group [Internet]. PLOS ONE; 2020. Available from: https://doi.org/10.1371/journal.pone.0227868.s002

Vashist, P, Tandon, R, Murthy, G, Barua, CK, Deka, D, Singh, S, Gupta, V, Gupta, N, Wadhwani, M, Singh, R and Vishwanath, K (2020). Association of cataract and sun exposure in geographically diverse populations of India: The CASE study. First Report of the ICMR-EYE SEE Study Group. [Data Collection]. PLOS ONE. https://doi.org/10.1371/journal.pone.0227868.s002

Description

The study sought to determine the prevalence of cataract and its association with sun exposure and other environmental risk factors in three different geographically diverse populations of India. This collection contains the Hindi and English versions of the study questionnaires (10.1371/journal.pone.0227868.s001), the study dataset in Stata and Excel format, a data codebook, analysis commands, output logs and instructions for using the dataset (10.1371/journal.pone.0227868.s002). Files are hosted on Figshare.

Methods

Description of data capture

A detailed questionnaire-based interview about outdoor activity in present, past and remote past, usage of sun protective measures, exposure to smoke, and detailed ophthalmic examination including assessment of uncorrected and best corrected visual acuity, measurement of intraocular pressure, slit lamp examination, lens opacities categorization using LOCS III and posterior segment evaluation was done. Lifetime effective sun exposure was calculated using Melbourne formula and expressed as quintiles. These were supplemented with physical environmental measurements.

Data capture method

Interview

Data Collection Period

From	To
2010	2016

Date (Date published in a 3rd party system)

23 January 2020

Language(s) of written materials

English

People & Groups

Data Creators	Vashist, P, Tandon, R, Murthy, G, Barua, CK, Deka, D, Singh, S, Gupta, V, Gupta, N, Wadhwani, M, Singh, R and Vishwanath, K
LSHTM Faculty/Department	Faculty of Infectious and Tropical Diseases > Dept of Clinical Research
Research Centre	International Centre for Eye Health
Participating Institutions	London School of Hygiene & Tropical Medicine, London, United Kingdom