| Answer | Crossword Clue |
|---|---|
| ROD | Cone's counterpart in the retina |
| RODS | Cones' mates, in the retina |
| rhodophane | the red pigment contained in the inner segments of the cones of the retina in animals |
| rhodophanes | RHODOPHANE, the red pigment contained in the inner segments of the cones of the retina in animals |
| photopic | Relating to or denoting vision in daylight or other bright light, believed to involve chiefly the cones of the retina |
| iodopsin | photosensitive violet pigment that occurs in the cones of the retina and is transformed by light into retinal and an opsin protein |
