rhodopsin
/roʊˈdɑpsɪn/
noun
- A light-sensitive protein in the retina of the eye that helps you see in dim light.
- A lack of rhodopsin can make it hard to see clearly at night.
- Rhodopsin is essential for night vision because it reacts to low levels of light.
- When you walk into a dark room, your rhodopsin helps your eyes adjust.