Table 2.

Features of Ocular Parameters Measured in a Free-Ranging Population of Rhesus Macaques

Variable	Mean ± SD	Range
IOP (mmHg)	18.37 ± 4.68	4–33
Pachymetry (µm)	473.06 ± 32.16	394–551
A-scan (mm)
Anterior chamber depth	3.45 ± 0.24	2.59–4.06
Lens	3.31 ± 0.25	2.81–4.05
Vitreous chamber depth	12.71 ± 0.54	11.47–14.11
Axial length	19.46 ± 0.56	18.11–20.81
Refraction (D)
Spheric	1.19 ± 1.77	−6.75 to 6.00
Cylinder	−1.79 ± 1.53	−6.75 to −0.25
Spherical equivalent	0.30 ± 1.70	−8.38 to 3.50
K1	51.21 ± 2.76	42.50–55.87
K2	53.21 ± 2.46	48.37–60.37
KM	52.41 ± 2.74	47.12–63.75

K1, flat keratometry; K2, steep keratometry; KM, mean curvature.