Thinnest pa of retina: (A) surrounding optic nerve head, (B) Foveola, (C) Fovea, (D) Nasally to fovea
Answer is B. Foveola High Yield Facts Posterior Pole: Macula + Optic nerve head. Optic disc: 1.5 mm Macula: 5.5 mm (Temporal to optic disc) Fovea - Centralis : Central depressed pa of Macula, 1.5 mm Foveola - 0.35 mm. Thinnest pa of retina after ora serrata. Contains no ganglion cells, only cones.