cornea
the transparent front “window” of the eye that serves as he major refractive surface.
The cornea is the clear, dome-shaped surface that covers the front of the eye and acts as a protective barrier. It is the first part of the eye that light enters and plays a crucial role in focusing light onto the retina, the light-sensitive tissue at the back of the eye. The cornea is made up of five layers, with the outermost layer being the epithelial layer, followed by the Bowman’s layer, the stroma, the Descemet’s membrane, and the innermost layer being the endothelial layer. The cornea also has a high concentration of nerve endings, making it extremely sensitive to touch and foreign objects. Due to its clarity and the absence of blood vessels, the cornea receives oxygen and nutrients from the tear film on its surface and the aqueous humor behind it. Dysfunction or damage to the cornea can cause vision problems such as blurred vision, double vision, and sensitivity to light. Common conditions affecting the cornea include corneal abrasions, keratitis, corneal dystrophies, and corneal ulcers. Treatment options may include eye drops, medications, contact lenses, or surgical intervention, depending on the severity and cause of the condition.
More Answers:
[next_post_link]