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Effects of Long-Term Contact Lens Wear on the Cornea print that page

ColorContactLens

The cornea is the clear, outermost layer of the eye that overlays the anterior chamber , iris , and pupil . It functions primarily as (1) a protective barrier to the rest of the eye by shielding against dust, bacteria, and other foreign agents, and (2) an exterior lens that helps focus entering

Effects of long-term contact lens wear on the cornea print that page

ColorContactLens

The cornea is the clear, outermost layer of the eye that overlays the anterior chamber , iris , and pupil . It functions primarily as (1) a protective barrier to the rest of the eye by shielding against dust, bacteria, and other foreign agents, and (2) an exterior lens that helps focus entering

Contact lens print that page

Contactlenzen_Confortissimo

A contact lens (also known simply as contacts for a pair) is a corrective , cosmetic , or therapeutic lens usually placed on the cornea of the eye . Leonardo da Vinci is credited with describing and sketching the first ideas for contact lenses in 1508, but it was more than 300 years

Orthokeratology print that page

Nolan, Paige, Gates, May, Grant, Fontana, Tabb, Freeman, Shed, Kerns, and Binder to the use of contact lenses for myopia reduction. [ 1 ] George Jessen created what was probably the first orthokeratology design in the 1960s made from PMMA material, which he marketed as "Orthofocus". These

wikipedia.org | 2011/9/12 20:28:25

Bausch & Lomb print that page

Optic_Projection_fig_169

and Drug Administration ) and an investment of three million USD, Bausch & Lomb brought the first contact lenses made of Poly-HEMA on the market in 1971. In contrast to the contact lenses available up to that time, made of glass and Lucite ( acrylic glass ), [ 4 ] the new lenses were softer

Corrective lens print that page

Bifoklabrille_fcm

presbyopia . Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted most commonly after cataract removal, but recently for purely refractive purposes . Myopia

Intraocular lens print that page

Plaque_for_Harold_Ridley%27s_first_intraocular_lens_at_St_Thomas%27_Hospital

An intraocular lens (IOL) is an implanted lens in the eye , usually replacing the existing crystalline lens because it has been clouded over by a cataract , or as a form of refractive surgery to change the eye's optical power . It usually consists of a small plastic lens with plastic side

LASIK print that page

US_Navy_070501-N-5319A-007_Capt._Joseph_Pasternak,_an_ophthalmology_surgeon_at_National_Naval_Medical_Center_Bethesda,_lines_up_the_laser_on_Marine_Corps_Lt._Col._Lawrence_Ryder%27s_eye_before_beginning_LASIK_IntraLase_surgery

developed the first microkeratome , and developed the technique used to cut thin flaps in the cornea and alter its shape, in a procedure he called keratomileusis . Barraquer also researched the question of how much of the cornea had to be left unaltered to provide stable long term results

Glasses print that page

Reading-Glasses

Historical types of glasses include the pince-nez , monocle , lorgnette , and scissor or scissors-glasses . Modern glasses are typically supported by pads on the bridge of the nose and by temple arms (sides) placed over the ears . CR-39 lenses are the most common plastic lenses due to their

Cataract surgery print that page

Cataract_surgery

involves manual expression of the lens through a large (usually 10–12 mm) incision made in the cornea or sclera . Although it requires a larger incision and the use of stitches, the conventional method may be indicated for patients with very hard cataracts or other situations in which