Please provide your email address to receive an email when new articles are posted on . LASIK, PRK and SMILE can all provide positive long-term vision results, but advancements in corneal and ...

Please provide your email address to receive an email when new articles are posted on . A novel gas-permeable contact lens induced relative peripheral myopic defocus, according to a study recently ...

To measure the refractive index distribution in porcine eye lenses for two wavelengths from the visible spectrum: 532 and 633 nm, in order to determine whether there are any discernible wavelength ...

Rigid gas permeable lenses are usually the lenses of choice after RK. They provide good visual acuity and tear exchange, they move well upon the cornea, and they allow high oxygen transmissibility to ...

Refractive Lens Replacement Surgery - also called refractive lens exchange or clear lens exchange surgery - involves the replacement of your eye's natural lens with a lens implant. It is a type of eye ...

Refractive errors are common eye issues that can cause blurry or distorted vision. Treatment usually involves wearing glasses or contact lenses or getting procedures ...

Astigmatism (uh-STIG-muh-tiz-um) is a type of refractive error where one or more of the eye’s surfaces are not smooth and/or ...

Save guides, add subjects and pick up where you left off with your BBC account. Light is refracted when it enters a material like water or glass. Depending on the density of the material, light will ...

Bulletin mathématique de la Société des Sciences Mathématiques de Roumanie, Nouvelle Série, Vol. 50 (98), No. 1 (2007), pp. 75-87 (13 pages) We obtain the regular refraction interval for a conic Γ ...