Corneal neovascularization is a kind of internal eye disease which refers to the growth of blood vessels in the cornea of the eye. When a person lacks blood vessels in the eye cornea, then this disease may attack the eye. The lacking of blood vessels in the eye results from corneal oxygen deprivation which is also called hypoxia. However, the infected person may not get any symptoms of this disease in the early stages as the body tries to supply necessary nutrients and oxygen to the corneal tissues which is deprived by the new blood vessels. But the later stages of this disease develops many varieties of symptoms like eye pain and extreme tearing, light sensitivity, redness, fanaticism to contact lenses, and declining vision.
The main reason of this disease is when the cornea lacks blood vessels it requires something to fill up and then it absorbs oxygen and that causes for blurry vision and corneal neovascularization develops. This disease can be caused for wearing contact lens for prolonged time. If a person wears contact lenses continuously for 10 to 12 hours per day then he/she may be affected with this disease.
Corneal neovascularization is basically a sight-threatening condition which causes maximum pain to the eye. This disease is generally connected with provocative infections on the ocular surface. The patients of this disease get abundant inflammatory and transmittable problems. They also feel degenerative and painful disorders which are linked with corneal neovascularization. Therefore, the balance of the eye is tilted towards angiogenesis.
Although the symptoms of this disease is unable to observe at the early stages but when the disease grows gradually, many varieties of symptoms develop. The continuous pain in the eye and excessive tearing are the most common symptoms of this disease. Sensitivity in the eye and feeling low vision are also most noticeable symptoms of corneal neovascularization. Sometimes the infected person experience extreme redness in the eye.
Matrix metalloproteinases and other proteolytic enzymes are the main drugs to be used for the treatment of corneal neovascularization. However, there are now many new medical and surgical treatments available such as angiostatic steroids, nonsteroidal inflammatory agents, argon laser photocoagulation, and photodynamic therapy, which are found very effective for this disease.
Corneal transplant can be also used for this disease as though it is a surgical procedure which can finely replace an injured cornea with corneal tissue from a donor. However, the transplantation of the eyes may develop a risk factor but it is considered as the best way for the disease of corneal neovascularization.
The main cause of infection of this disease is considered for wearing contact lenses for longer time. If someone wears hydrogel, hard, and rigid gas permeable CLs for longer time then it is very prone to attack corneal neovascularization in his/her eyes. Corneal neovascularization is mainly associated with a corneal hypoxia from CL wear.
The main type of corneal neovascularization is chronic corneal aridness. This is the same type of corneal neovascularization however; surgical treatments are same for this disease too.