Myopia (Nearsightedness)
The light rays are being focused onto the retina, the result is clear vision in all ranges.
The light rays from distant objects are focused in front of the retina. Distant objects are blurred.
Also called nearsightedness. It makes distance vision blurry, and is caused by the excessive length of the eye, or the excessively short radius of the cornea, or both. There is no capacity for compensating myopia by using the eye’s built-in focusing system. Compensation involves using glasses or contact lenses, or modifying the shape of the cornea using a surgical procedure like LASIK, or a non-surgical procedure such as Orthokeratology. People contemplating surgery should wait until the cornea is mature, around age 20-22, to assure stable results. Corneal molding procedures like Orthokeratology can be initiated at any age.
Myopia is likely to increase as a person passes through adolescence due to increases in the length of the eye, and is often a familial trait. Some of these changes can be controlled by using Rigid Gas Permeable Lenses in a process called Myopia Control, which both molds the cornea and inhibits axial length increases.