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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Exp Eye Res. 2008 Sep 18;88(2):286–292. doi: 10.1016/j.exer.2008.09.003

Table 1.

pO2 levels in the vitreous humor and lens center of various species.

pO2 (mm Hg)
Cat Rabbit Guinea Pig * Rat
A. Normal animals:
Close to the retina 31 ± 3 (6) 28 ± 10 (3) 1.3 ± 1.1 (3)
Behind the lens 6.8 ± 1.5 (6) 4.0 ± 2.0 (3) 1.3 ± 1.2 (3)
Lens center 0.5 (1) 2.0 ± 1.0 (3) 0.6 ± 0.4 (5) 5.6 ± 5.0 (6)
B. Injected animals:
Lens center (MP) 0.7 ± 0.4 (3) **9.4 ± 4.0 (10)
Lens center (HY) 0.5 ± 0.4 (3) 4.2 (2)

A: pO2 levels are indicated for two locations in the vitreous humor and in the center of the lens for normal animals.

B: Lens center pO2 analyses were conducted 1–2 weeks after intravitreal injection of either microplasmin (MP) or hyaluronidase (HY).

Results are expressed as means ± S.D. with the number of analyses indicated in parentheses.

*

For comparison, we have previously reported that the pO2 level of normal rat mid-vitreous humor is 23mm Hg (Quiram et al., 2007).

**

p<0.05, compared to the lens center value for control rats shown in Table 1A.