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2. What Is a Cataract? These Are the Causes, Symptoms, and ... - AOL

   www.aol.com/lifestyle/cataract-causes-symptoms...

   These Are the Causes, Symptoms, and Treatments of Cataracts. Kimberly Goad. August 28, 2020 at 1:34 PM ... Cataract treatments. Whatever the cause of your cataracts, surgery is the only way to get ...

3. Intraocular lens - Wikipedia

   en.wikipedia.org/wiki/Intraocular_lens

   A toric IOL is a type of toric lens used to correct preexisting corneal astigmatism at the time of cataract surgery. [20] Astigmatism can also be treated with limbal relaxing incisions or an excimer laser procedure. [21] [22] About 40% of Americans have significant astigmatism and thus may be candidates for a toric IOL. [22] Cataract surgery ...

4. Refractive error - Wikipedia

   en.wikipedia.org/wiki/Refractive_error

   Other symptoms may include double vision, headaches, and eye strain. [3] Near-sightedness is due to the length of the eyeball being too long; far-sightedness the eyeball too short; astigmatism the cornea being the wrong shape, while presbyopia results from aging of the lens of the eye such that it cannot change shape sufficiently. [3]

5. Refractive surgery - Wikipedia

   en.wikipedia.org/wiki/Refractive_surgery

   The treatment is effective for myopia with astigmatism or otherwise irregular corneas, and reduces symptoms such as glare, halos, and night driving difficulty. [8] Refractive Lenticule Extraction (ReLEx): ReLEx "FLEx" (Femtosecond Lenticule Extraction): A femtosecond laser cuts a lenticule within the corneal stroma.

6. Photorefractive keratectomy - Wikipedia

   en.wikipedia.org/wiki/Photorefractive_keratectomy

   There are also some pre-existing conditions that may complicate or preclude the treatment. [8] Collagen vascular disease (e.g., corneal ulceration or melting) Ocular disease (e.g., dry eye, keratoconus, glaucoma) Systemic disorders (e.g., diabetes, rheumatoid arthritis) History of side effects from steroids; Granular corneal dystrophy type II

7. Fuchs heterochromic iridocyclitis - Wikipedia

   en.wikipedia.org/wiki/Fuchs_heterochromic...

   Fuchs heterochromic iridocyclitis (FHI) is a chronic unilateral uveitis appearing with the triad of heterochromia, predisposition to cataract and glaucoma, and keratitic precipitates on the posterior corneal surface. Patients are often asymptomatic and the disease is often discovered through investigation of the cause of the heterochromia or ...