| The 4 types of refractive errors are (Click to read more): | |
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Light rays entering the eye are focused on the retina, which is the nerve layer lining the back of the eye. The images received by the retina travel along the optic nerve to the brain, thereby allowing us to see. The cornea and lens are the main components which refract or focus the light rays onto the retina. Refractive error refers to the inability of the eye to focus the light rays on the retina resulting in a blurred image.
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| The methods for correcting refractive error include wearing spectacles, contact lenses or refractive surgery. These essentially serve to redirect the light rays entering the eye so that images are focused sharply on the retina. The choice of correction of refractive error varies from individual to individual, and often depends on the patient’s lifestyle requirements and personal preference. | |
| Spectacles | |
| Spectacles are the cheapest, safest and easiest method to correct refractive errors. They can correct most refractive errors effectively. For people who have presbyopia, bifocal or progressive spectacles may be used help with both distance vision as well as near reading. | |
| Contact Lenses | |
| Contact lenses are plastic lenses that are placed on the cornea which can correct refractive errors. There are various types available, including soft and rigid gas permeable lenses. People should not overuse contact lenses and must maintain proper contact lens hygiene to prevent potentially serious complications like corneal infections. | |
| Refractive Surgery | |
| Refractive surgery refers to surgical correction of the refractive error of the eye. The most common refractive surgical procedure in the world today is LASIK surgery, because of its well-established effectiveness, safety and fast visual recovery. Other refractive procedures include photorefractive Keratectomy (PRK) and EpiLASIK. | |
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