fovea

This central part is called the fovea centralis and is the point of acutest vision.

Many birds possess besides this temporal fovea a second fovea nearer the nasal side.

It may well occur, then, that in a movement the image happens to fall on the blind-spot and not on the fovea.

Another significant fact is that the fovea is of little use in very dim light.

The fovea centralis of the human retina is the seat of most acute vision, and in the fovea centralis there are no rods.