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Figure 5

From: Lamina Cribrosa Morphology Predicts Progressive Retinal Nerve Fiber Layer Loss In Eyes with Suspected Glaucoma

Figure 5

Measurement of the lamina cribosa depth (LCD) and lamina cribrosa curve index (LCCI) using B-scan images of the optic nerve head. (A) Infrared fundus image with lines pointing to the level of seven B-scan images spaced equidistantly across the vertical optic disc diameter in each eye. (B) The LCD was measured as the distance from the reference line connecting the two Bruch’s membrane opening (BMO) points to the anterior surface of the lamina cribrosa (LC). The LCD was measured at the maximally depressed point. (C) The LCCI was measured by dividing the LC curve depth (D) within the BMO by the width of the anterior LC surface reference line (W), and then multiplying by 100.

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