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  2. Chalazion - Wikipedia

    en.wikipedia.org/wiki/Chalazion

    Chalazion surgery is a simple procedure that is generally performed as a day operation, and the person does not need to remain in the hospital for further medical care. The eyelid is injected with a local anesthetic, a clamp is put on the eyelid, then the eyelid is turned over, an incision is made on the inside of the eyelid, and the chalazion ...

  3. List of instruments used in ophthalmology - Wikipedia

    en.wikipedia.org/wiki/List_of_instruments_used...

    to remove the granulation tissue from a chalazion during surgery Entropion clamp: right and left varieties exist; large clamp with two limbs; self-retaining with big discoid ends used to hold and prevent an entropion from bleeding during its surgery Nettleship's punctum dilator

  4. Astigmatism (optical systems) - Wikipedia

    en.wikipedia.org/wiki/Astigmatism_(optical_systems)

    Astigmatism can be often corrected by glasses with a lens that has different radii of curvature in different planes (a cylindrical lens), contact lenses, or refractive surgery. [5] Astigmatism is quite common. Studies have shown that about one in three people suffers from it. [6] [7] [8] The prevalence of astigmatism increases with age. [9]

  5. Refractive surgery - Wikipedia

    en.wikipedia.org/wiki/Refractive_surgery

    Refractive surgery is an optional eye surgery used to improve the refractive state of the eye and decrease or eliminate dependency on glasses or contact lenses. This can include various methods of surgical remodeling of the cornea ( keratomileusis ), lens implantation or lens replacement.

  6. Eye surgery - Wikipedia

    en.wikipedia.org/wiki/Eye_surgery

    Eye surgery, also known as ophthalmic surgery or ocular surgery, is surgery performed on the eye or its adnexa. [1] Eye surgery is part of ophthalmology and is performed by an ophthalmologist or eye surgeon. The eye is a fragile organ, and requires due care before, during, and after a surgical procedure to minimize or prevent further damage.

  7. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    Near-sightedness, far-sightedness, astigmatism, presbyopia [3] Causes: Eyeball length, problems with cornea shape, aging of the lens [3] Diagnostic method: Eye examination [3] Treatment: Eyeglasses, contact lenses, refractive surgery [3] Frequency ~1.5 billion [4]

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