[u][/u] Receptors of the sight sense and genesis of the eye lens transparency
Journal Title: Progress in Health Sciences - Year 2012, Vol 2, Issue 1
Abstract
Visual perception begins with light absorption through photoreceptors called plugs and rods onto the retina. Under the influence of light, stimulated photoreceptors of the retina induce physic-chemical changes of pigment substances, arising due to biological signals. Then, they are transmitted through the lateral geniculation body of processing system and finally centre of vision cortex, called front temporal areas, where follows definitely conscious image of vision. When the fetus’ young lens cells contain all organelles and nuclei, it is not transparent, because they represent potential sources of light scattering. Later, in the fiber cell, differentiation process of all the intracellular organelles, including the nucleus are degraded through apoptic mechanisms. Organelle breakdown eliminates light scattering structures from optical axis and ensures the transparency of the tissue. This review article presents new, useful information about the eye lens, epithelial cells and fiber cells.
Authors and Affiliations
R. Farbiszewski
Keywords
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