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Phacoemulsification is a cataract surgery method in which the internal lens of the eye which has developed a cataract is emulsified with the tip of an ultrasonic handpiece and aspirated from the eye. Aspirated fluids are replaced with irrigation of balanced salt solution to maintain the volume of the anterior chamber during the procedure.
Intracapsular cataract extraction has been superseded where the facilities for surgery under a microscope are available except for cases where the lens capsule cannot be retained, and couching is no longer used in mainstream medicine. In phacoemulsification (phaco), the natural lens is fragmented by an ultrasonic probe and removed by suction.
Manual small incision cataract surgery (MSICS) is an evolution of extracapsular cataract extraction (ECCE); the lens is removed from the eye through a self-sealing scleral tunnel wound. A well-constructed scleral tunnel is held closed by internal pressure, is watertight, and does not require suturing.
The technique has mostly been replaced by extracapsular cataract surgery, including phacoemulsification. [25] The lens can also be removed by suction through a hollow instrument: bronze oral-suction instruments that seem to have been used for this method of cataract extraction during the 2nd century CE have been unearthed. [26]
While hydrodissection disconnects the lens from the lens capsule, hydrodelineation splits it into endonuclear and epinuclear sections thus reducing the size of the hard nucleus, making its extraction possible through a smaller incision. [2] This also facilitates phacoemulsification.
Cataract surgery, using a temporal approach phacoemulsification probe (in right hand) and "chopper" (in left hand) being done under operating microscope at a Navy medical center 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 ...
At that point, they may suggest prescription-strength acne treatment or a comendo extraction procedure. But first, consider one of these over-the-counter treatments: A topical retinoid , which ...
Cataract surgery by “couching” (lens depression) is one of the oldest surgical procedures. The technique involves using a sharp instrument to push the cloudy lens to the bottom of the eye. Perhaps this procedure is that which is mentioned in the articles of the Code of Hammurabi (ca. 1792–1750 BC) though it is a mere speculation.