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    ARTICLE

    Effect of Age-Stiffening Tissues and Intraocular Pressure on Optic Nerve Damages

    Leo KK Leung, Match WL Ko, David CC Lam

    Molecular & Cellular Biomechanics, Vol.9, No.2, pp. 157-174, 2012, DOI:10.3970/mcb.2012.009.157

    Abstract Age-stiffening of ocular tissues is statistically linked to glaucoma in the elderly. In this study, the effects of age-stiffening on the lamina cribrosa, the primary site of glaucomatous nerve damages, were modeled using computational finite element analysis. We showed that glaucomatous nerve damages and peripheral vision loss behavior can be phenomenologically modeled by shear-based damage criterion. Using this damage criterion, the potential vision loss for 30 years old with mild hypertension of 25mmHg intraocular pressure (IOP) was estimated to be 4%. When the IOP was elevated to 35mmHg, the potential vision loss rose to 45%; More >

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