| Many people with total blindness experience life-long sleeping problems because their retinas are unable to detect light. |
| With age, your eyes are less able to produce tears, your retinas thin and your lenses gradually turn yellow and become less clear. |
| Lutein is one of the hydroxy carotenoids that make up the macular pigment of human retinas. |
| These animals typically contain abundant populations of rods in their retinas, which are often found in conjunction with a retinal tapetum. |
| Greens and reds are bright enough to sting your retinas, but blues and yellows are soft and washed out. |
| As soon as the flash frames started strobing audience retinas, the soundtrack began adding layers of chaotic on-the-scene sound recordings. |
