| List I Depth cues | List II Definition | ||
| A. | Texture gradient | I. | Straight lines seem to join together as they become more distant |
| B. | Motion parallax | II. | Details of things on surface that are far away are less distinct |
| C. | Linear perspective | III. | An object changes position on the retina as the head moves |
| D. | Retinal size | IV. | If two objects are the same size, the one producing smaller retinal image is further away |


