taittovirheitä

Taittovirheitä, also known as refractive errors, are common vision conditions where the eye cannot properly focus light onto the retina. This results in blurry or distorted vision. The primary types of taittovirheitä are myopia, hyperopia, and astigmatism. Myopia, or nearsightedness, occurs when the eye is too long or the cornea is too curved, causing distant objects to appear blurry. Hyperopia, or farsightedness, happens when the eye is too short or the cornea is too flat, making close objects appear blurry. Astigmatism is caused by an irregularly shaped cornea or lens, leading to blurred vision at all distances.

These conditions are typically diagnosed through a comprehensive eye examination performed by an optometrist or ophthalmologist. Treatment options for taittovirheitä are aimed at correcting the way light is focused onto the retina. The most common methods include prescription eyeglasses and contact lenses. For myopia and hyperopia, lenses are designed to either reduce or increase the eye's focusing power, respectively. Astigmatism correction involves lenses with different curvatures in different meridians to compensate for the irregular shape. In some cases, refractive surgery, such as LASIK, can permanently alter the shape of the cornea to correct the refractive error. Early detection and treatment are important to ensure clear vision and prevent potential complications.