| Rods | Cones |
| (i) Responsible for twilight vision. | (i) Responsible for daylight and colour vision. |
| (ii) More in number | (ii) Less in number |
| (iii) Respond to lower light intensity. | (iii) Sensitive to bright light |
| (iv) Absent in fovea centralis | (iv) Present in fovea |
| (v) Contain pigment Rhodopsin | (v) Contain pigment iodopsin |
| (v) Contain pigment | (v) Contain pigment |
