RETINA
A THIN, TRANSPARENT LAMINAR STRUCTURE situated at the back of the eye
The retina is sandwiched BETWEEN the VITREOUS BODY of the actual eyeball, and the SCLERA
The retinas of fishes DO NOT DIFFER FUNDAMENTALLY FROM THOSE OF OTHER VERTEBRATES
They can be divided into 2 layers -the OUTER and INNER layers
The OUTER LAYER is made up of the PIGMENTED EPITHELIUM layer and the PHOTORECEPTORS
The INNER LAYER is made up of NERVOUS TISSUE and has NUCLEI OF THE PHOTORECEPTORS, BIPOLAR and GANGLION CELLS