refractieve

Refractieve is the Dutch adjective meaning related to refraction, the bending of light as it passes between media with different optical densities. The English equivalent is refractive. The concept is central in optics, vision science, and imaging.

In optics, refraction depends on the refractive index of materials and is described by Snell's law. Lenses and curved surfaces use refractive power to form or correct images. Refractive power is measured in diopters and is a key factor in the design of eyeglasses, cameras, microscopes, and telescopes.

In ophthalmology, refractieve errors (ametropia) occur when the eye's focusing power does not match its length. Common forms include myopia (nearsightedness), hyperopia (farsightedness), and astigmatism. Diagnosis uses refraction testing, keratometry, and retinoscopy. Treatment aims to correct focusing errors with spectacles or contact lenses; refractive surgery (for example LASIK, PRK) or intraocular lenses may be options.

In other fields, refractive properties influence imaging quality, projection, and instrument performance. Etymology: from Latin refractus, meaning bent back; the term entered Dutch as refractieve and English as refractive.

Note: Refractieve is used in Dutch to describe phenomena or treatments related to refraction; in English, the corresponding terms are refractive, refractive error, and refractive surgery.