Foveola

The foveola is located within a region called the macula, a yellowish, cone photoreceptor filled portion of the human retina.

[1] In this region the cone receptors are found to be longer, slimmer, and more densely packed than anywhere else in the retina, thus allowing that region to have the potential to have the highest visual acuity in the eye.

[2] Serial semithin and ultrathin sections, and focused ion beam (FIB) tomography were prepared from 32 foveolae from monkeys (Macaca fascicularis) and humans.

Serial sections and FIB analysis were then used to construct 3D models of central Müller and photoreceptor cells.

Unique Müller cells are present in the central foveolae (area of 200 μm in diameter) of humans and monkeys.