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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Ophthalmic Physiol Opt. 2016 Jan;36(1):21–32. doi: 10.1111/opo.12256

Table 1.

Age group classifications for rhesus monkeys and humans.

Age Group Classifications
Age (Years)
Adult Age Group Monkey Human
Young (pre-presbyopic) 6–9 yr; n=5 19–23 yr; n=4
Mature 12–13 yr; n=3 27–31 yr; n=4
Older (presbyopic) 19–27 yr; n=3 49–65 yr; n=4