akkommodationsvermögen

Akkommodationsvermögen refers to the ability of the eye to change its focal distance, allowing it to focus on objects at varying distances. This process is achieved through the ciliary muscle, which alters the shape of the crystalline lens. When viewing distant objects, the ciliary muscle relaxes, and the lens becomes flatter. Conversely, when focusing on near objects, the ciliary muscle contracts, causing the lens to become more convex. This dynamic adjustment ensures a clear image is projected onto the retina.

The range of akkommodationsvermögen decreases with age, a phenomenon known as presbyopia. This age-related loss of focusing power typically begins in the early to mid-40s, making it difficult to read small print or focus on close-up tasks. Factors such as the elasticity of the crystalline lens and the strength of the ciliary muscle contribute to this decline. While presbyopia is a natural part of aging, it can be corrected with reading glasses, bifocals, or multifocal contact lenses. Understanding akkommodationsvermögen is crucial in ophthalmology for diagnosing and managing refractive errors and age-related vision changes.