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Cataract surgery
A cataract is an opacification or cloudiness of the eye's crystalline lens due to aging, disease, or trauma that typically prevents light from forming a clear image on the retina. If visual loss is significant, surgical removalof the lens may be warranted, with lost optical power usually replaced with a plastic intraocular lens (IOL). Due to the high prevalence of cataracts, cataract extraction is the most common eye surgery.
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Glaucoma surgery
Glaucoma is a group of diseases affecting the optic nerve that results in vision loss and is frequently characterized by raised intraocular pressure (IOP). There are many types of glaucoma surgery, and variations or combinations of those types, that facilitate the escape of excess aqueous humor from the eye to lower intraocular pressure, and a few that lower IOP by decreasing the production of aqueous humor. The most common type is canaloplasty:
Canaloplasty
Is an advanced, nonpenetrating procedure designed to enhance drainage through the eye’s natural drainage system to provide sustained reduction of IOP. Canaloplasty utilizes microcatheter technology in a simple and minimally invasive procedure. To perform a canaloplasty, an Ophthalmologist creates a tiny incision to gain access to a canal in the eye. A microcatheter circumnavigates the canal around the iris, enlarging the main drainage channel and its smaller collector channels through the injection of a sterile, gel-like material called viscoelastic. The catheter is then removed and a suture is placed within the canal and tightened. By opening up the canal, the pressure inside the eye can be reduced.
Refractive surgery or Laser eye surgery
Refractive surgery or laser eye surgery aims to correct errors of refraction in the eye, reducing or eliminating the need for corrective lenses and it includes the following surgeries:
- Keratomilleusis is method of reshaping the cornea surface to change its optical power. A disc of cornea is shaved off, quickly frozen, lathe-ground, and is then returned to its original power.
- Laser assisted in-situ keratomileusis (LASIK) LASIK or Lasik (laser-assisted in situkeratomileusis) is a type of refractive laser eye surgery performed by ophthalmologists for correcting myopia, hyperopia, and astigmatism.The procedure is generally preferred to photorefractive keratectomy, PRK, (also called ASA, Advanced Surface Ablation) because it requires less time for the patient's recovery, and is overall less painful.
- Laser assisted sub-epithelial keratomileusis (LASEK) are laser eye surgery procedures intended to correct a person's vision, reducing dependency on glasses or contact lenses.
- Photorefractive keratectomy (PRK)
- Laser thermal keratoplasty (LTK)
- Conductive keratoplasty (CK) uses radio frequency waves to shrink corneal collagen. It is used to treat mild to moderate hyperopia.
- Limbal relaxing incisions (LRI) to correct minor astigmatism
- Astigmatic keratotomy (AK), aka Arcuate keratotomy or Transverse keratotomy
- Radial keratotomy (RK)
- Hexagonal keratotomy (HK)
- Epikeratophakia is the removal of the corneal epithelium and replacement with a lathe cut corneal button.
- Intracorneal rings (ICRs), or corneal ring segments (Intacs)
- Implantable contact lenses
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