Tags: Anatomical Structure.
Mammals normally have a pair of eyes. Although mammalian vision is not so excellent as bird vision it is at least dichromatic for most of mammalian species with certain families (such as Hominidae) possessing a trichromatic color perception.Dimensions vary only 1–2 mm among humans. The vertical axis is 24 mm; the transverse being larger. At birth it is generally 16–17 mm enlarging to 22.5–23 mm by three years of age. Between then and age 13 the eye attains its mature size.
