| retina → HasA → photoreceptor | 0.63 | |
| retina → HasA → light-sensitive cells | 0.43 | |
| retina → HasA → cone cells | 0.40 | |
| retina → HasA → rich supply of blood vessels | 0.40 | |
| retina → HasA → millions of nerve cells | 0.37 | |
| retina → HasA → two parts | 0.35 | |
| retina → HasA → the fovea | 0.33 | |
| retina → HasA → associated neurons | 0.32 | |
| retina → HasA → one major artery | 0.32 | |
| retina → HasA → protein cells | 0.30 | |
| retina → HasA → approximately 6 million cones | 0.28 | |
| retina → HasA → four kinds of motion-sensitive … | 0.28 | |
| retina → HasA → photosensitive cells | 0.25 |