Fig. 1.
Illustrations of visual impairments implemented in Adobe Photoshop. (a) Cataract; (b) Keratoconus; (c) Age-related macular degeneration (d) Glaucoma; (e) Color Blindness (Tritanopia).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.