Results 91 to 100 of about 196,061 (206)

Presumed nonadaptation to a multifocal intraocular lens masking visual loss from a pituitary tumor

open access: yesAmerican Journal of Ophthalmology Case Reports
Purpose: To report a case of delayed diagnosis of a pituitary tumor impacting vision. The patient had undergone bilateral cataract surgery with multifocal lenses, and even an intraocular lens (IOL) exchange for persistent visual dissatisfaction, which ...
Norman A. Saffra   +4 more
doaj   +1 more source

In-the-bag multifocal intraocular lens causing pigment dispersion and refractory secondary ocular hypertension

open access: yesIndian Journal of Ophthalmology, 2018
Pigment dispersion and elevated intraocular pressure (IOP) with sulcus placed hydrophobic acrylic intraocular lenses (IOLs) are described and are rare with in-the-bag IOLs.
Sirisha Senthil, Isha G Grover
doaj   +1 more source

Temporal multiplexing to simulate multifocal intraocular lenses: theoretical considerations [PDF]

open access: yes, 2017
16 pags., 10 figs., 1 tab. -- OCIS codes: (330.0330) Vision, color, and visual optics; (330.7327) Visual optics, ophthalmic instrumentation; (330.5370) Physiological optics; (220.1010) Aberrations (global); (220.1080) Active or adaptive optics.Fast ...
Akondi, Vyas   +7 more
core   +1 more source

Multifocal Intraocular Lenses Clinical Assessment. Patient Selection for Multifocal Intraocular Correction

open access: yes, 2018
There are some multufocal intraocular corrections particular qualities compared to monofocal correction. Therefore, the patient’s careful selection, detail preoperative diagnosis, accurate intraocular lens power calculation are necessary to get the ...
T. Z. Kerimov, T. A. Morozova
core   +1 more source

Bilateral implantation of +3.0 D multifocal toric intraocular lenses: results of a US Food and Drug Administration clinical trial

open access: yes, 2017
Robert Lehmann,1 Satish Modi,2 Bret Fisher,3 Magda Michna,4 Michael Snyder5 1Lehmann Eye Center, Nacogdoches, TX, 2Seeta Eye Center, Poughkeepsie, NY, 3The Eye Center of North Florida, Panama City, FL, 4Department of Clinical Trial Management, Alcon ...
Fisher B   +4 more
core  

Temporal multiplexing and simulation of multifocal intraocular lenses

open access: yes, 2017
Rochester, New York United States, 17–21 October 2016Tunable lenses can simulate multifocal intraocular lenses through temporal multiplexing. The effect of sampling, response time of tunable lens and choice of the through-focus optical quality metric in ...
Akondi, Vyas
core  

Optical design of low index intraocular lenses

open access: yes, 1991
The effect of shape of low index (1.43) intraocular lenses on optical performance of pseudophakic eyes was investigated. A range of image quality criteria was used. The optimum lens for on-axis vision was biconvex, with the more curved surface facing the
Atchison, David A.
core  

Performance measurement of multifocal intraocular lenses in spherical aberration condition

open access: yes, 2018
Intraocular lenses(IOLs) are artificial lenses that are implanted to replace the eye’s natural lens during cataract surgery. Monofocal IOLs with single focus are common, but multifocal IOLs are getting popular by allowing multiple focuses. However, human
Wonyeong Park   +2 more
core  

Stereopsis Following Implantation of Presbyopia-Correcting Intraocular Lenses: A Narrative Review

open access: yesOphthalmology and Therapy
Recent advancements in cataract surgery have broadened its scope from mere vision restoration to include correction of refractive errors and presbyopia. This evolution has introduced multifocal and extended depth-of-focus (EDOF) intraocular lenses (IOLs),
Yongyuan He   +4 more
doaj   +1 more source

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