Retinal Structural and Microvascular Alterations in Different Acute Ischemic Stroke Subtypes

Figure 1

Retinal structure and the corresponding microvascular density and fractal dimension in superficial and deep layers imaged by OCT/OCTA. (a) Five regions within a 3 mm area around the fovea: (C) central region; (S) superior; (T) temporal; (I) inferior; (N) nasal. (b, c) OCTA images of superficial capillary plexuses (SCP) and deep capillary plexuses (DCP) in 3 × 3 mm area around fovea. (d, e) Fractal dimension analysis in four quadrants and six annular zones excluding the avascular zone (diameter = 0.6 mm): C1 (diameter = 0.92 mm), C2 (diameter = 1.23 mm), C3 (diameter = 1.55 mm), C4 (diameter = 1.87 mm), C5 (diameter = 2.18 mm), and C6 (diameter = 2.50 mm). (f) Retinal nerve fiber layer (RNFL) and ganglion cell complex (GCC) thickness around the fovea. GCIPL = ganglion cell-inner plexiform layer.

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