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a 26 gauge needle bent twice used for incising the anterior capsule of the lens in lens extraction Wire vectis: a loop of wire attached to a stack used to extract cataract affected lenses Irrigating vectis: a small hollow instrument with a used to introduce fluid into the anterior chamber to raise its pressure to aid cataract extraction [2] Canula
Nucleus of a mature cataract removed by extracapsular cataract extraction (ECCE) Two main classes of cataract surgical procedures are currently in common use throughout the world: phacoemulsification, and extracapsular cataract extraction. Intracapsular cataract extraction has been superseded where the facilities for surgery under a microscope ...
The cataract is removed from the capsule and anterior chamber using hydroexpression [Note 3] viscoexpression, [Note 4] or more-direct mechanical methods. [4] [13] [14] The extraction of the cataract must be done with due care so as not to compromise the integrity of the tunnel; the endothelium and capsule are also vulnerable to injury.
Intracapsular cryoextraction was the favoured form of cataract extraction from the late 1960s to the early 1980s: it consisted in using a liquid-nitrogen-cooled probe tip to freeze the encapsulated lens to the probe. This required a large incision and the cornea to be folded back and the anterior chamber to be drained.
In ophthalmology, cryoextraction is a form of intracapsular cataract extraction in which a cryoextractor, a special type of cryoprobe, is used to freeze the crystalline lens and pull it intact from the eye. [1] Dr. Charles Kelman is credited with pioneering this surgical method in 1962. It can also be used in the treatment of orbital tumors. [2]
Clear lens extraction, also known as refractive lensectomy, custom lens replacement or refractive lens exchange is a surgical procedure in which clear lens of the human eye is removed. Unlike cataract surgery, where the cloudy lens is removed to treat a cataract, clear lens extraction is done to surgically correct refractive errors such as high ...
In intra-capsular cataract extraction (ICCE), the whole lens including the anterior part of the capsule is removed. During more common extra capsular cataract surgery procedures like micro incision cataract surgery, phacoemulsification etc., the clouded lens is removed through an opening made in the anterior lens capsule. [ 23 ]
"Couching for cataract"; Wellcome Collection illustration of Indian doctors performing the technique. Couching is the earliest documented form of cataract surgery. It involves dislodging the lens of the eye, thus removing the cloudiness caused by the cataract, resulting in aphakia.