Bruch's Membrane is the transparent innermost
layer of the choroid.
Recall that the choroid is the layer of the eyeball
located between the retina
and the sclera
(see sketch of the back of the eyeball below), and that the side
of the choroid closest to the centre of the eyeball is attached
to the retina.
This transparent innermost layer of the choroid is called Bruch's
It is so named after the German anatomist K.W.L. Bruch (1819-84).
The subject of visual (also known as "physiological") optics
is a key component of many courses within the fields of both biology and
physics. It is also an essential consideration in the design of displays
and control units used in many applications from televisions and mobile
telephones to advanced aircraft. In the context of engineering "visual
optics" is one of several medical and psychological topics in the
important area of "Human Factors".