ANGLE-CLOSURE GLAUCOMA - RELATION BETWEEN LENS THICKNESS, ANTERIOR-CHAMBER DEPTH AND AGE

  • 1 January 1984
    • journal article
    • research article
    • Vol. 19  (7) , 300-302
Abstract
Ultrasonographic biometric measurements (axial length of the globe, lens thickness and anterior chamber depth) were taken in 89 eyes of patients with primary angle-closure glaucoma (ACG). Analysis of the mean values showed an apparently abnormal pattern of growth of the lens, its thickness increasing at an accelerated rate between the 4th and 6th decades, then not increasing for about a decade, and finally increasing again but at a slower pace. The anterior chamber depth, however, appeared to continue decreasing at a constant rate. Forward movement of the lens, probably secondary to loosening of the zonules, apparently is also a factor in the shallowing of the anterior chamber. The frequency of acute attacks of ACG peaked twice, 1st in the presbyopic years, at ages 53-58, and then in the senile years, at ages 63-70; no attacks occurred during the decade in which the lens seemed not to be growing.

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