As we know, cornea is a transparent tissue in the front of the eye. The retina in the eye acts like a film in a camera. This part takes photos and transmits them to the brain. The cornea must be transparent enough for images to be well recorded by the retina. If for any reason the cornea has any opacities or injuries, it prevents the appropriate transmission of light and image to the retina; therefore, the images sent to the retina will be abnormal and the visual system will be impaired. In Tehran-Iran Noor Eye Hospital corneal opacity is treated by experienced and skilled ophthalmologists using modern equipment, according to the highest clinical standards of the world.