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People who have a multifocal intraocular lens after their cataract is removed may be less likely to need additional glasses compared with people who have standard monofocal lenses. [2] People receiving multifocal lenses may experience more visual problems, such as glare or haloes (rings around lights), than with monofocal lenses. [2] People ...
People who have a multifocal IOL after their cataract is removed may be less likely to need additional glasses compared with people who have standard monofocal lenses. [6] However, people receiving multifocal lenses may experience more visual problems than with monofocal lenses. [ 6 ]
IOLs can be used to correct other vision problems, such as toric lenses for correcting astigmatism. [39] IOLs can be classified as monofocal, toric, and multifocal lenses. [40] Ocular anaesthesia has improved since Alfred Einhorn synthesised procaine in 1905, which was used in retrobulbar anaesthesia.
Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [4] [10] Cataracts usually develop slowly and can affect one or both eyes. [4]
Similarly, cataract surgery can be performed together with Laser Blended Vision to provide a patient with better spectacle independence than can be afforded by simple monovision and without the decrease in quality of vision that is produced by a Multifocal intraocular lens. Multifocal intraocular lenses work by splitting the light entering the ...
[12] [13] The higher a contact lens wearer's prescription is, the thicker their lens is overall, which decreases Dk/t. Minus lenses are thicker away from the center, while plus lenses are thicker at the center, which decreases Dk/t in those zones. [12] [13] Silicon hydrogel lenses were introduced in the late 1990s and their usage has steadily ...
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