A comparison of the elastic properties of human choroid and sclera.
作者： Thomas R. Friberg , John W. Lace
DOI: 10.1016/0014-4835(88)90053-X
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摘要: Multiple strips of choroid (56) and sclera (64) from eight pairs human eye-bank eyes were subjected to simple tension in a test apparatus determine the rigidity (modulus elasticity) these tissues. The modulus elasticity chorodial complex (choroid-Bruch's membrane-pigment epithelium) was significantly greater posteriorly located samples than anteriorly ones (7.5 +/- 7.0 vs. 2.2 1.5 x 10(5) N m-2, mean S.D.). for averaged across all locations 6.0 2.8 m-2 average stress at failure 3.3 1.3 m-2. scleral also varied with location 2.9 1.4 10(6) anterior 1.8 1.1 posterior levels ranging 20- 260 10(4) There significant correlation stiffness age (P less 0.05, r = 0.80). elastic properties choroidal may be relevant pathogenesis variety ocular diseases, including macular degeneration, angioid streaks, folds, ruptures.
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