CORNEA eye surgery :
The cornea is your eye’s clear, protective outer layer. Along with the sclera (the white of your eye), it serves as a barrier against dirt, germs, and other things that can cause damage.
Your cornea can also filter out some of the sun's ultraviolet light. But not much, so your best bet to keep it health is to wear a pair of wraparound sunglasses when you're outdoors.
To understand potential problems, it helps to know the parts of the cornea. Is has three main layers:
Epithelium. The outermost layer. It stops outside matter from getting into your eye. It also absorbs oxygen and nutrients from tears.
Stroma. The middle and thickest layer lies behind the epithelium. It’s made up mostly of water and proteins that give it an elastic but solid form.
Endothelium. This is a single layer of cells on the very back of the stroma. The aqueous humor, a clear fluid in the front chamber of your eye, is in constant contact with this layer. It works like a pump. The stroma absorbs excess liquid and the endothelium pulls it out. Without this function, the stroma would become waterlogged. Your cornea would get opaque and hazy, and so would your vision.
Symptoms of Cornea Problems :
The term corneal disease refers to many conditions that affect this part of your eye. These include infections, tissue breakdown, and other disorders you get from your parents.