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. 2021 Feb 16;9(4):e489–e551. doi: 10.1016/S2214-109X(20)30488-5

Figure 2.

Photographic images of the external appearance of trichiasis, corneal scar, cataract, diabetic retinopathy, glaucoma, and age-related macular degeneration, with arrows pointing to the affected part on a cross-sectional diagram of the eye. The purpose is to show the complexity of the visual system.

The human eye and common conditions

The location and clinical appearance of common causes of vision impairment.