akkommodaatiokykyä

Akkommodaatiokykyä refers to the ability of the eye to change its focus from distant to near objects. This is achieved by the lens in the eye changing its shape, becoming thicker and more convex for near vision and thinner and less convex for distant vision. This change in shape is controlled by the ciliary muscles.

The range of akkommodaatiokykyä diminishes with age. This age-related loss of focusing ability is known as presbyopia. Presbyopia typically begins to manifest in individuals in their early to mid-40s, making it difficult to read small print or perform other close-up tasks without corrective lenses. The degree of akkommodaatiokykyä is a measurable quantity, often expressed in diopters.

Factors influencing akkommodaatiokykyä include age, genetics, and potentially certain health conditions or medications. While presbyopia is a natural part of aging, understanding the concept of akkommodaatiokykyä is important for understanding visual function and the need for corrective measures as people age. Specialized eye examinations can assess an individual's akkommodaatiokykyä.