foveola /fo·ve·o·la/ (fo-ve´o-lah) pl. fove´olae [L.] a minute pit or depression.
fo·ve·o·la (f -v   -l)n. pl. fo·ve·o·las or fo·ve·o·lae (-l  ) A small fovea. fo·ve o·lar adj. |
foveola
pl. foveolae [L.] a minute pit or depression.
foveola
The base of the fovea centralis with a diameter of about 0.35 mm (or about 1º of the visual field). The image of the point of fixation is formed on the foveola in the normal eye. The foveola contains cone cells only (rod-free area). The foveal avascular zone is slightly larger (about 0.5 mm in diameter) (Fig. F9). Syn. fovea (term often used by clinicians). See eccentricity; fixation; umbo.
)
Fig. F9 Cross-section of the retina showing the fovea centralis and foveola (rod-free area)
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content.
| ?Page tools | ||
|---|---|---|
|