It may well occur, then, that in a movement the image happens to fall on the blind-spot and not on the fovea.
The fovea centralis lacks rods and this part of the eye becomes practically color blind at very low intensities of light.
Many birds possess besides this temporal fovea a second fovea nearer the nasal side.
The name fovea, given to the constellation by Bayer, signifies a pit where corn was deposited.
The fovea centralis of the human retina is the seat of most acute vision, and in the fovea centralis there are no rods.
It is placed by those who mention it in a 'fosse', 'fossatum', or 'fovea'.
It is exactly that line which joins the point fixed with the centre of the fovea centralis.
fovea, Foveola -ae: a shallow depression with well-marked sides: a pit.
The fovea has no rods and hence is of little use in very faint light.
This central part is called the fovea centralis and is the point of acutest vision.
1849, from Latin fovea "small pit," related to favissae "underground reservoirs;" of unknown origin, perhaps from Etruscan.
fovea fo·ve·a (fō'vē-ə)
n. pl. fo·ve·ae (-vē-ē')
A small pit or cuplike depression in a bone or an organ.
The fovea centralis.