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. Author manuscript; available in PMC: 2024 Jul 24.
Published in final edited form as: Prog Retin Eye Res. 2021 Dec 11;89:101033. doi: 10.1016/j.preteyeres.2021.101033

Fig. 8.

Fig. 8.

An enlarged foveal avascular zone is not always an indicator of poor visual acuity. For example, eye A had an enormous FAZ area of 1.00 mm2 with a poor VA of 40 letters. In contrast, eye B had a similar FAZ size but could read 85 letters on VA examination. Therefore, other vascular parameters, such as SCP VD, DCP VD, the FAZ perimeter and the FAZ-AI should also be considered when evaluating a patient’s functional visual outcome. AI = acircularity index; DCP = deep capillary plexus; FAZ = foveal avascular zone; SCP = superficial capillary plexus; VA = visual acuity; VD = vessel density.