Figure 2.

OCT analysis of surface position and retinal thickness. (A) Surface position was quantified relative to a horizontal reference line of 3200 μm in length set to just touch the retinal surface at its extremities and centered on the optic nerve (horizontal blue line centered on the optic nerve). Measurements of retinal surface position were taken every 200 μm (blue drop lines) from the midline (white line). (B) Retinal thickness was measured to the anterior surface of the retinal nerve fibre layer (blue dots) out to 2000 μm either side of the center of the optic nerve perpendicular to a reference line drawn along Bruch’s membrane.