Fovea centralis
The fovea centralis is a specialized area of the retina that has the highest visual acuity (sharpest vision). Specifically, it is a depression located within the center of the macula lutea, the rounded yellowish area of the retina situated just lateral to the optic disc. It measures about 1.5 mm in diameter and is directly opposite the pupil, corresponding to where the visual axis (the path light follows through the eye) meets the retina.
The fovea centralis is the thinnest area of the retina. It has the highest density of cone photoreceptor cells, which are responsible for color vision and function best in bright light. It contains almost no rod cells, which facilitate vision in dim light conditions and are insensitive to colour. The central portion of the fovea centralis is called the foveola. Unlike other areas of the retina, this region lacks capillaries, allowing light to fall directly on the cones.
Terminology |
English: Fovea centralis Latin: Fovea centralis |
Definition | Conical depression within the center of the macula lutea of the retina |
Function | High-acuity central vision |
Learn more about the fovea centralis of the retina and the anatomy of the eyeball in the following study unit:
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