What are lenses?A lens is a transparent piece of glass or plastic with at least one curved surface. It gets its name from the Latin word for "lentil" (a type of pulse used in cooking), but don't let that confuse you. There's no real reason for this other than that the most ...
An intraocular lens (IOL) is an artificial lens that can replace the natural one inside your eye. Learn how IOLs can help cataracts and refractive errors.
An intraocular lens (IOL) is an artificial lens that can replace the natural one inside your eye. Learn how IOLs can help cataracts and refractive errors.
UV protection is an important feature to have in contact lenses as it can prevent you from developing eye conditions such as cataracts. In terms of risk from infection, use of daily disposable contact lenses means foreign body particles are less likely to be trapped for extended periods of ...
Cataracts. The lens inside the eye gets cloudy, reducing vision.Cataractsare common in older people, but children can have cataracts because of infections, injuries, or metabolic disorders. Convergence insufficiency. This disorder prevents the eyes from working together when looking at near objects. ...
Senile changes in the crystalline lens; what is the proportion of real senile cataracts in old patients on whom a lens-extraction operation is performed?CATARACTALVARO ME.doi:10.1016/0002-9394(53)92289-2AlvaroMoacyr E.Elsevier Inc.American Journal of Ophthalmology...
What is the structure of the tooth? Following eye surgery, a man was required to wear an eye patch over his right eye. What effect will this patch have on this man's vision? Cataracts are often surgically repaired by replacing the natural lens with an artificial one made of plastic. Expl...
You may develop glaucoma (increased pressure), cataracts (clouding of the lens), or long-term inflammation. You may lose your vision. You may have dry eyes. Scars may form on your corneas. You may have other eye problems, such as permanent glare, haze, or halos around lights at night...
These steps are creation of corneal incisions, capsulorrhexis, and “softening” of the cataract. Even when a laser is used, cataract surgery is still primarily done with an ultrasound handpiece (Phaco). After the natural lens has been removed, it often is replaced by an artificial lens, ...
Converging or convex lens are a type of spherical lens in which at least one of the surfaces has a convex type of curvature. In such type of lens, the central portions is always thicker that the two ends of the lens. They could be of biconvex, plano-convex and concavo-convex type. ...