Qualitative Aspect Of The Photoreceptor Mosaic

The photoreceptor mosaic of aged retinas, without pathologic changes, is similar to that of young retinas. However, the aged retinas show two typical cytological aspects. The first is the presence of refractive particles (of around 1 mm in diameter) located at the ellipsoid-mioid junction of the cones. These refractive particles appear like refractive bodies or granules of lipofuscin that are found in the internal segments that begin to be observed after 30 to 40 years. The second aspect is the dislocation of the nuclei, which are occasionally found situated in the internal segment layer rather than in the external nuclear layer.

Blood Pressure Health

Blood Pressure Health

Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...

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