Cataract and Refractive Surgery (Essentials in Ophthalmology)

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With an ever-growing number of procedures, the need for education is essential.

To see clearly, the cornea and the lens must bend, or refract, light rays so they focus on the retina — a layer of light-sensing cells that line the back of the eye. The retina converts the light rays into impulses that are sent to the brain, where they are recognized as images.


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This is called a refractive error. Glasses, contact lenses, and refractive surgery try to reduce these errors by making light rays focus on the retina. About 95 percent of all ophthalmologists are AAO members.

Cataract and Refractive Surgery

Your referring eye care professional may perform a preliminary eye exam. Take your eye prescription records with you to the exams. If you wear contact lenses, stop wearing them before your baseline evaluation soft contact lenses — two weeks; toric soft lenses or rigid gas permeable lenses — three weeks; hard lenses — four weeks. Contacts can temporarily change the shape of the cornea and compromise precise measurements in the pre-op exam.

Eye surgery

If you qualify for surgery, your doctor may tell you to stop wearing your contact lenses for a while before the surgery for the same reason that you stopped wearing them before your baseline exam: contacts can temporarily change the shape of the cornea. Your cornea should be in its natural shape the day of surgery. Your doctor also may tell you to stop wearing makeup, lotions, or perfume for a few days before surgery. These products can interfere with the laser treatment or increase the risk of infection after surgery.

LASIK is an outpatient surgical procedure. The only anesthetic is an eye drop that numbs the surface of the eye.


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  6. The surgery takes 10 to 15 minutes for each eye. Sometimes, both eyes are done during the same procedure; but sometimes, surgeons wait sometimes days or weeks to see the result on one eye before doing surgery on the other. The Surgical Procedure : The eye is moistened. A suction ring is positioned to keep the eye from moving and the cornea in the correct position.

    YAG Capsulotomy After Cataract Surgery

    A special device cuts a hinged flap of thin corneal tissue off the outer layer of the eyeball cornea and the flap is lifted out of the way. The laser reshapes the underlying corneal tissue, and the surgeon replaces the flap, which quickly adheres to the eyeball. There are no stitches. Cornea ;29 5 Ocular Rhinosporidiosis as a cause of chronic follicular conjunctivitis.

    Eye surgery - Wikipedia

    Arch Ophthalmol ; 8 Ophthalmology ; 4 Ophthalmology ; 9 Arch Ophthalmol. Herpetic keratitis with iritis after corneal crosslinking with riboflavin and ultraviolet A for keratoconus.

    J Cataract Refract Surg. Cryopreservation and lentiviral-mediated genetic modification of human primary cultured corneal endothelial cells. Invest Ophthalmol Vis Sci. A 33 year old man with a white pupil.

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