M1 patients with no or mild signs of retinopathy have reduced parafoveal vessel density in the DCP on OCTA when compared to non-diabetic controls. These OCTA findings suggest that parafoveal capillary nonperfusion is an early process in DM1-related retinal changes and occurs initially at the level of the DCP. Further investigation is needed to understand the prognostic role of these vascular changes.
In CSME, FAF correlates better with OCT patterns and central field microperimetry rather than with visual acuity. FAF is a rapid, noninvasive technique that may give new insight into the evaluation of DME. The validity of FAF in the follow-up and treatment outcomes in DME remain to be assessed.
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