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. 2020 Apr 23;9(5):13. doi: 10.1167/tvst.9.5.13

Figure 7.

Figure 7.

Semithin section histology: comparison of outer retina (OR) and photoreceptor outer segment length (PROS) at distances 0.5 mm to 4 mm ventral to the ONH. (A) Overview of a toluidine-blue stained semithin resin section of the retina at 3.5 mm ventral to the ONH. The black rectangle indicates the location of the detailed cutouts in panel C. (B) Image from dissection microscope illustrating location and orientation of the tissue sections. (C) The photoreceptor outer segments were longest at 2.5 mm ventral to the ONH where the perceived PROS:OR ratio was the highest. The lowest PROS:OR ratio was close to the ONH where the photoreceptor inner segments were longer and the outer segments were shorter than in the visual streak. N, nasal; T, temporal. Section thickness: 750 µm. Horizontal scale bar = 50 µm (A), 20 µm (C).