Cornea is the transparent front part of the eye that covers the pupil, iris and anterior chamber. It is responsible for two thirds of the power of the eye. In humans, the refractive power of the cornea is approximately 43 dioptres. While the cornea contributes most of the eye’s focusing power, it’s focus is fixed. The curvature of the lens, on the other hand, can be adjusted to “tune” the focus depending upon the object’s distance.
The human cornea has five (possibly six) layers. The cornea has a diameter of about 11.5 mm and a thickness of 0.5–0.6 mm in the centre and 0.6–0.8 mm at the periphery. Transparency, avascularity, the presence of immature resident immune cells makes cornea a very special tissue. The cornea has no blood supply, it gets oxygen directly through the air. Oxygen first dissolves in the tears and then diffuses throughout the cornea to keep it healthy. Therefore, disturbance in the tear film can be detrimental to the health of cornea. Best Cornea Surgeon in Delhi treat all types of corneal disorders like dry eye, keratoconus, corneal dystrophies, allergic and immune pathologies.
Corneal transplants, both full thickness and lamellar are performed routinely. In fact, of all the tissue transplants, corneal transplant is the most successful owing to the unique properties of this tissue. But sometimes, the body can reject this tissue which is taken from a cadaver immediately after death. If the transplanted cornea is rejected by the body, following symptoms may occur:
- Decreased vision
- Extreme sensitivity to light
In a case a patient experiences any of these symptoms, an urgent visit to the Best Cornea Specialist in Delhi trained in corneal disorders is mandatory as early treatment can save these transplants from failing.