Seasonal Effect on Ocular Sun Exposure and Conjunctival UV Autofluorescence.

ABSTRACT:

Purpose

To evaluate feasibility and repeatability of measures for ocular sun exposure and conjunctival ultraviolet autofluorescence (UVAF), and to test for relationships between the outcomes.

Methods

Fifty volunteers were seen for two visits 14 ± 2 days apart. Ocular sun exposure was estimated over a 2-week time period using questionnaires that quantified time outdoors and ocular protection habits. Conjunctival UVAF was imaged using a Nikon D7000 camera system equipped with appropriate flash and filter system; image analysis was done using ImageJ software. Repeatability estimates were made using Bland-Altman plots with mean differences and 95% limits of agreement calculated. Non-normally distributed data was transformed by either log10 or square root methods. Linear regressi

SUBMITTER: Haworth KM 

PROVIDER: S-EPMC5266636 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature