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The Crystalline Lens: Nerve and Oxygen Supply

The crystalline lens is a vital structure in the human eye that plays an important role in focusing light onto the retina. In this article, we will discuss the nerve and oxygen supply to the crystalline lens and how these functions are essential for its proper functioning. Nerve Supply to the Crystalline Lens The crystalline lens receives its nerve supply from the ciliary ganglion, which is a group of nerve cells located near the base of the eye. The ciliary ganglion sends out the short ciliary nerves, which travel through the ciliary muscle and supply the crystalline lens. These nerves play an important role in the accommodation reflex, which allows the lens to change its shape and focus on objects at varying distances. The ciliary ganglion also sends out parasympathetic fibers, which travel through the short ciliary nerves to the ciliary muscle. These fibers control the contraction and relaxation of the ciliary muscle, which in turn affects the shape of the lens and ...
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Lattice degeneration;

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Vitamin Supplements and age-related macular degeneration(AMD)

In 2001, the researchers of the Age-Related Eye Disease Study reported their landmark findings that patients with dry AMD who took a combination of antioxidants and zinc experienced a decrease in disease progression. The study divided the patients based on severity of their AMD: mild disease (category 1); intermediate disease (categories 2 and 3); and advanced disease (category 4). The primary endpoints of the AREDS trial were progression to advanced AMD and the degree of vision loss. They recommended vitamin supplementation only in patients with either intermediate disease or advanced disease in only one eye. There was a clear benefit in these patients, as they demonstrated decreased visual loss and decreased progression to more advanced stages of AMD. The results of the study showed no clear benefit in the patients with category 1 disease (those with only very small drusen in the macula). These results recommend vitamins to all but two large cohorts of patients, the first of whic...
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