Near-sightedness
If an eye is too long, light rays are focused into a point in front of the retina when looking into the distance. The near-sighted person therefore has a blurred vision of distant objects. Near-sightedness can be corrected with concave glasses or adequate contact lenses. They make the light rays focus on the retina creating a sharp, focused image.
The treatment with the Excimer-Laser or the LASIK method can "flatten" the cornea, and thus adjust it to the point in which the rays are focused.
If an eye is too long, light rays are focused into a point in front of the retina when looking into the distance. The near-sighted person therefore has a blurred vision of distant objects. Near-sightedness can be corrected with concave glasses or adequate contact lenses. They make the light rays focus on the retina creating a sharp, focused image.
The treatment with the Excimer-Laser or the LASIK method can "flatten" the cornea, and thus adjust it to the point in which the rays are focused.