Sun exposure can cause damage to the retina, leading to vision loss. The image shows a normal healthy eye on the left and an eye with a cataract on the right. Both images are on a background image showing the sun shining brightly in a blue sky. The sun image in the background is by Anuragrana18 (Own work) [CC BY-SA 4.0 (http://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons; healthy eye image is by Gordon Wrigley https://www.flickr.com/photos/tolomea/5682792933 [CC BY 2.0: https://creativecommons.org/licenses/by/2.0/], and the eye with the cataract is by Rakesh Ahuja, MD – Own work, [CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=966501]. Compilation by Nancy R. Gough, PhD, BioSerendipity, LLC
Read more at N. R. Gough, Drug Repurposing: Preserving Vision with New Drug Combinations. BioSerendipity (20 July 2017). https://www.bioserendipity.com/2017/07/20/drug-repurposing-preserving-vision-with-new-drug-combinations/