The Retina
Categories:
Diseases of The Eye and Ear
This is a delicate membrane, upon the surface of which the
images of external objects are received. Its outer surface is in contact
with the choroid; its inner, with the vitreous (glass) body. Behind it is
continuous with the optic nerve; it gradually diminishes in thickness from
behind forward. The retina is soft, semi-transparent and of a purple tint
in the fresh state. Exactly in the centre of the posterior part of the
retina corresponding to the axis of the eye, and at a point in which the
sense of vision is most perfect, is an oval yellowish spot, called after
its discoverer, the yellow spot or Macula lutea of Sommering.