Ace the NBEO Ocular Anatomy 2026: Master the Post Seg & Cranial Nerves with Confidence!

The foveola is the region with the highest cone density. It sits at the very center of the fovea as a tiny pit that is almost entirely cone photoreceptors. Inner retinal layers are displaced away in this area, giving light a direct path to the cones and minimizing scattering. This perfect packing and direct access maximize visual acuity and color discrimination under bright light. Moving outward toward the parafovea and perifovea, cone density decreases and rods become more prevalent, reducing acuity and color sensitivity.