The Organization of the Retina and Visual System
Helga Kolb Two or three types of cone photoreceptor and a single type of rod photoreceptor are present in the normal mammalian retina. Some non-mammalian retinas have even more cone types (see later). 1. Light microscopy and ultrastructure of rods and cones. In vertical sections of retina prepared for light microscopy with …
Helga Kolb 1. Overview. When an ophthalmologist uses an ophthalmoscope to look into your eye he sees the following view of the retina (Fig. 1). In the center of the retina is the optic nerve, a circular to oval white area measuring about 2 x 1.5 mm across. From the center of the optic nerve …
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Helga Kolb 1. General characteristics. Todays research on the retina focuses a great deal of attention on neurotransmission between the neurons of the retina. Varous techniques using autoradiography, immunocytochemistry and molecular biology are being used to mark neurons for neurochemicals, their synthesizing enzymes, calcium binding proteins and receptors and transporters of these neurochemicals. …
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