Lamina cribrosa thickness correlated with posterior scleral thickness and axial length in monkeys.

Abstract:

PURPOSE:To explore associations of lamina cribrosa thickness with axial length and thickness of the posterior sclera in monkeys. METHODS:Examining histological sections by light microscopy, we measured the thickness of the lamina cribrosa and posterior sclera and axial length. RESULTS:The study included 28 animals (28 eyes) with a mean age of 13.3 ± 4.9 years (range: 3-24 years) and mean axial length of 18.9 ± 1.4 mm (range: 17-21 mm) (22 eyes after experimental temporary central retinal artery occlusion; four eyes after a permanent occlusion of the posterior ciliary artery; and two eyes without any intervention). Mean thickness of the lamina cribrosa was 167 ± 30 μm (range: 115-273 μm). Thinner lamina cribrosa thickness was significantly associated with longer axial length (standardized correlation coefficient beta: -0.42; p = 0.026), with thinner sclera at the posterior pole (beta: 0.56; p = 0.002) and with thinner sclera at the disc border (beta: 0.55; p = 0.002). Lamina cribrosa thickness was not significantly related to temporary central retinal artery occlusion (p = 0.14) or to permanent posterior ciliary artery occlusion (p = 0.49) or age (p = 0.46). CONCLUSIONS:As in humans, lamina cribrosa thickness in non-glaucomatous monkeys got thinner with longer axial length and with thinner posterior sclera. These data may be of interest for studies on the process of emmetropization/myopization in monkeys, and they may be of interest for the studies on the biomechanics of the optic nerve head.

journal_name

Acta Ophthalmol

journal_title

Acta ophthalmologica

authors

Jonas JB,Kutscher JN,Panda-Jonas S,Hayreh SS

doi

10.1111/aos.13070

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

e693-e696

issue

8

eissn

1755-375X

issn

1755-3768

journal_volume

94

pub_type

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