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Procedure is similar to cataract surgery, most commonly followed by an intraocular lens implantation. In patients requiring only distance vision correction, a conventional mono-focal intraocular lens is placed in both eyes after the clear lens is removed. [1] While distance vision is fine in this, reading glasses are required for near vision. [1]
Cataract surgery is the removal of the natural lens of the eye that has developed a cataract, an opaque or cloudy area. [3] Over time, metabolic changes of the crystalline lens fibres lead to the development of a cataract, causing impairment or loss of vision.
This made visual rehabilitation after cataract surgery a more efficient, effective, and comfortable process. [107] Intracapsular cryoextraction was the favoured form of cataract extraction from the late 1960s to the early 1980s using a liquid-nitrogen-cooled probe tip to freeze the encapsulated lens to the probe.
Cataract surgery with implantation of a toric IOL is essentially the same as cataract surgery with a conventional IOL. Like toric contact lenses , toric IOLs have different powers in different meridians of the lens, and they must be positioned on the correct meridian to reverse the preexisting astigmatism.
The primary causes include post-cataract surgery, certain medications, and, less commonly, neurological or ophthalmological conditions. Post-cataract surgery is a common cause, as replacing the natural lens with a synthetic one increases exposure to blue light, leading to temporary blue-tinted vision. This effect usually resolves as the eye adapts.
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