Thursday, 12 September 2019

Laser Eye Surgery

Laser Eye Surgery

Laser Eye Surgery


Laser eye surgery is an umbrella term for various eye surgeries used to correct refractive errors i.e., myopia (near-sightedness), hyperopia (far-sightedness) and astigmatism. The most common types of laser eye surgery include LASIK, PRK, LASEK, and epi-LASIK. Each of these four surgeries uses the same special laser, called an “excimer” laser to reshape the cornea (clear cover that rests over the colored iris and lens). They differ in specificity, recovery time, surgical instruments and patient candidacy.

LASIK (Laser-Assisted in situ Keratomileusis) is commonly performed laser eye surgery. Before laser eye surgery, the doctor evaluates health, shape, and thickness of the cornea, tear layer, pupil size and existing conditions and their severity. The type of surgery to be performed is determined by the surgeon after the consultation which is influenced by the patient’s eye prescription and lifestyle.

LASIK

LASIK


Laser eye surgery is pain-free and completed within 15 minutes for both eyes. The patient is able to go home the same day with improved vision without eyeglasses or contact lenses and can have a normal vision within 24 hours.

In LASEK (Laser-Assisted Sub-Epithelial Keratomileusis) surgery, only one laser is used to correct the vision, rather than two lasers used in LASIK.

An ultra-thin sheet of alcohol solution is applied to the surface of an eye. The alcohol solution loosens the thin layer of cells on the eye’s surface called the epithelium. The cells stick to the sheet of alcohol are then gently moved to the side of the eye, giving the surgeon access to the layer of the cornea which will be treated by the laser.

After the laser has reshaped the cornea, a protective contact lens is put on the eye to increase comfort whilst it heals. Later, this lens is normally removed after about four days.

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