Results 11 to 20 of about 5,555,258 (227)

Sensitivity of the corneal-plane refractive compensation to change in power and axial position of an intraocular lens [PDF]

open access: yesAfrican Vision and Eye Health, 2009
If an intraocular lens is displaced or if its power is changed what are the consequences for the refractive compensation of the eye?  Gaussian optics is used to obtain explicit formulae for the sensitivityof the corneal-plane refractive compensation ...
W. F. Harris
doaj   +5 more sources

CATARACT SURGERY AND INTRAOCULAR LENS POWER CALCULATION IN A PATIENT WITH ANTERIOR MEGALOPHTHALMOS WITH NORMAL SIZED CRYSTALLINE LENS; CASE REPORT [PDF]

open access: yesSanamed, 2015
Cataract surgery and intraocular lens power calculation is challenging in patients with anterior megalophthalmos and cataract, with postoperative refractive surprise frequently reported.
Glišić Selimir   +3 more
doaj   +2 more sources

Accuracy of Intraocular Lens Power Estimation in Eyes Having Phacovitrectomy for Rhegmatogenous Retinal Detachment [PDF]

open access: yes, 2014
Purpose: To evaluate the accuracy of intraocular lens power estimation in eyes having phacovitrectomy for rhegmatogenous retinal detachment. Methods: Retrospective case review of 100 consecutive eyes that underwent phacovitrectomy for rhegmatogenous ...
Stephenson, John   +3 more
core   +1 more source

Error induced by the estimation of the corneal power and the effective lens position with a rotationally asymmetric refractive multifocal intraocular lens [PDF]

open access: yesInternational Journal of Ophthalmology, 2015
AIM:To evaluate the prediction error in intraocular lens (IOL) power calculation for a rotationally asymmetric refractive multifocal IOL and the impact on this error of the optimization of the keratometric estimation of the corneal power and the ...
David P. Piñero   +4 more
doaj   +1 more source

Intraocular light scatter as modeled through a stratified medium [PDF]

open access: yes, 2001
Intraocular light scatter is modeled through a stratified medium. It is shown that the eye lens possesses properties of an interference filter. In conditions that may mimic opacification, as found with cataract formation, such a filter may have stop ...
Pierscionek, Barbara   +2 more
core   +1 more source

Secondary toric intraocular lens implantation for post-operative ammetropia and astigmatism after small incision cataract surgery

open access: yesJournal of Clinical Ophthalmology and Research, 2013
We report a case of 56-year-old female who had undergone left eye small incision cataract surgery 2 months earlier with history of no visual gain uncorrected after surgery. On examination, she had a superior scleral tunnel incision with 6.5 mm optic poly
Rajesh Subhash Joshi
doaj   +1 more source

Analysis of accuracy of twelve intraocular lens power calculation formulas for eyes with axial myopia

open access: yesTaiwan Journal of Ophthalmology, 2023
PURPOSE: The aim of this study is to compare twelve intraocular lens power calculation formulas for eyes longer than 25.0 mm in terms of absolute error (AE), the percentage of postoperative emmetropia, and agreement interval in Bland–Altman analysis ...
Wiktor Stopyra
doaj   +1 more source

Intraocular Lens Power Calculation Without Corneal Parameters: A New Option

open access: yes, 2020
To compare different methods in calculating the corneal radius (R) to be used in case of intraocular lens power calculations when it is ...
Zeppa, Lucio   +11 more
core   +1 more source

Pediatric intraocular lens power calculation

open access: yesTNOA Journal of Ophthalmic Science and Research, 2018
Pediatric cataracts pose multiple challenges in terms of management and postoperative rehabilitation. Difficulties in obtaining accurate measurements for axial length and keratometry are encountered due to poor cooperation in children and instrumentation
Sandra Chandramouli Ganesh   +2 more
doaj   +1 more source

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