Table 3. Density peak of retinal ganglion cells in catarrhines and platyrrhines estimated by using different techniques. Data were rounded to the thousands. Estimates from retinal area are also listed.
| Species | Retinal Area (mm2) | Retinal Ganglion Cells | Ref |
| Density Peak | |||
| (cells/mm2) | |||
| Alouatta caraya | 641 | 43,000 | * |
| Cebus apella | 611 | 46,000 | [34] |
| Callithrix jacchus jacchus | 210 | 63,000 | [65], [82] |
| Aotus trivirgatus | 660 | 14,000 | [38] |
| Macaca mulatta | 670 | 33,000 | 41 |
| Macaca mulatta | 670 | 38,000 | [41], [60] |
| Macaca fascicularis | 527 | 48,000 | [57], [62] |
| Cercopithecus aethiops sabeus | 707 | 43,000 | [63] |
| Papio anubis | 793 | 30,000 | [64] |
| Homo sapiens | 1,012 | 35,000 | [58] |
*This work.