Korjauslinssiä

Korjauslinssiä, often referred to as a correction lens, is a type of optical lens designed to rectify visual impairments. These lenses are specifically engineered to compensate for refractive errors such as myopia (nearsightedness), hyperopia (farsightedness), astigmatism, and presbyopia. The primary function of a korjauslinssiä is to alter the path of light rays entering the eye, ensuring they focus accurately on the retina, thereby producing a clear image.

The design and power of a korjauslinssiä are determined by an optician or ophthalmologist following a comprehensive eye examination. For myopia, a concave lens is used to diverge light rays before they enter the eye. For hyperopia, a convex lens is employed to converge light rays. Astigmatism is corrected using a cylindrical lens that compensates for irregularities in the cornea or lens. Presbyopia, the age-related loss of near focusing ability, is typically addressed with multifocal lenses, which include different prescriptions within a single lens.

Korjauslinssiä can be manufactured from various materials, including glass and different types of plastic, each offering distinct advantages in terms of weight, durability, and optical clarity. They are commonly incorporated into eyeglasses and contact lenses. The precise curvature, thickness, and refractive index of the lens are meticulously calculated to achieve the desired correction for an individual's unique vision needs. The goal of wearing a korjauslinssiä is to restore or improve visual acuity, enhancing the wearer's ability to see clearly at various distances.