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Intraocular lenses

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https://www.readbyqxmd.com/read/28317664/posterior-chamber-phakic-intraocular-lenses-to-improve-visual-outcomes-in-keratoconus-patients
#1
REVIEW
José Juan Esteve-Taboada, Alberto Domínguez-Vicent, Teresa Ferrer-Blasco, José F Alfonso, Robert Montés-Micó
The aim of this review is to summarize the results of using posterior chamber phakic intraocular lenses (pIOLs) to restore quality of vision in keratoconus patients. These pIOLs can correct the refractive errors associated with keratoconus and can also be combined with other surgical techniques to improve the results.
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28317662/straylight-from-glistenings-in-intraocular-lenses-in%C3%A2-vitro-study
#2
Grzegorz Łabuz, Nicolaas J Reus, Thomas J T P van den Berg
PURPOSE: To assess light scattering from intraocular lenses (IOLs) with different numbers of laboratory-induced glistenings and create a model for predicting glistening effects on straylight. SETTING: Rotterdam Ophthalmic Institute, Rotterdam, the Netherlands. DESIGN: Experimental study. METHODS: Glistenings were induced in 7 Acrysof IOLs using an accelerated aging method. To create different numbers of glistenings, the IOLs were immersed in a balanced salt solution at temperatures ranging from 37°C to 60°C and cooled to room temperature...
January 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28301497/long-term-outcomes-of-ciliary-sulcus-versus-capsular-bag-fixation-of-intraocular-lenses-in-children-an-ultrasound-biomicroscopy-study
#3
Yun-E Zhao, Xian-Hui Gong, Xue-Ning Zhu, He-Ming Li, Meng-Jun Tu, Terry G Coursey, Stephen C Pflugfelder, Feng Gu, Ding Chen
PURPOSE: To evaluate the long-term outcomes of ciliary sulcus versus capsular bag fixation of intraocular lenses (IOLs) in children after pediatric cataract surgery. METHODS: IOL was implanted in the ciliary sulcus in 21 eyes of 14 children, and in the capsular bag in 19 eyes of 12 children for the treatment of pediatric cataract in an institutional setting. Ultrasound biomicroscopy (UBM) was performed. Main outcome measures included IOL decentration, IOL tilt, anterior chamber depth (ACD), angle-opening distance at 500 μm (AOD500), trabecular-iris angle (TIA), best-corrected visual acuity (BCVA), intraocular pressure (IOP), and incidence of postoperative complications...
2017: PloS One
https://www.readbyqxmd.com/read/28297161/photoreversibility-and-biocompatibility-of-polydimethylsiloxane-coumarin-as-adjustable-intraocular-lens-material
#4
Rachid Jellali, Virginie Bertrand, Michaël Alexandre, Nancy Rosière, Magda Grauwels, Marie-Claire De Pauw-Gillet, Christine Jérôme
Polydimethylsiloxane (PDMS) constitutes an interesting material for a variety of biomedical applications, especially as intraocular lenses (IOLs), for its excellent transparency. In this work, a photoreversible PDMS-coumarin network, whose shape and properties can be adjusted postoperatively in a noninvasive manner, is developed. The synthesis of PDMS-coumarin is achieved by amidation of a coumarin acid chloride derivative with amine-functionalized PDMSs. Under exposure of λ > 300 nm, these polymers can be cured by dimerization of coumarin...
March 15, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28291198/-clinical-results-of-aphakia-correction-with-multifocal-intraocular-lenses
#5
G V Voronin, V R Mamikonyan, V M Sheludchenko, M N Narbut
AIM: to assess visual functions and ergonomics after bilateral versus unilateral implantation of Lentis Comfort LS-313 MF15 multifocal intraocular lenses (MIOL) in aphakic eyes. MATERIAL AND METHODS: A total of 20 patients with М LENTIS LS-313 MF15 MIOLs were followed up. Group 1 consisted of 12 patients after bilateral symmetric implantation, group 2 - of 8 patients after unilateral procedure. The following parameters were examined: uncorrected binocular visual acuity at far, near, and intermediate distances under photopic and mesopic conditions, the range of pseudoaccommodation, spatial contrast sensitivity to achromatic sinusoidal gratings, lens stability with account to its optical design, and patient satisfaction with the resultant vision...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28289951/distribution-of-the-anterior-posterior-and-total-corneal-astigmatism-in-healthy-eyes
#6
Sepehr Feizi, Mohammad Naderan, Vahid Ownagh, Fatemeh Sadeghpour
PURPOSE: To evaluate the magnitude and axis orientation of the anterior, posterior, and total corneal astigmatism in normal healthy eyes of an Iranian population. METHODS: In a prospective cross-sectional study, ophthalmic and anterior segment parameters of 153 healthy eyes of 153 subjects were evaluated by Galilei dual Scheimpflug analyzer. The magnitude and axis orientation [with-the-rule (WTR), against-the-rule (ATR), and oblique] of the anterior, posterior, and total corneal astigmatism measurements (ACA, PCA, and TCA) were compared according to the age, sex, and other ophthalmic parameters...
March 13, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28289879/-predictability-of-residual-astigmatism-after-implantation-of-posterior-chamber-toric-lenses
#7
D Mies, T Klink, W Eisenbarth, L M Meyer
BACKGROUND: The objective of the study was to examine the predictability of residual astigmatism after cataract surgery and implantation of the posterior chamber aspheric toric lens TECNIS® ZCT, Abott Medical Optic (Ettlingen, Deutschland). MATERIAL AND METHODS: The retrospective study included a total of 88 patient eyes undergoing a cataract operation with a toric lens implantation between March 2014 and October 2015. The inclusion criteria were a regular astigmatism of at least 0...
March 13, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28264126/erratum-for-material-analysis-of-spontaneously-subluxated-iris-fixated-phakic-intraocular-lenses
#8
(no author information available yet)
No abstract text is available yet for this article.
March 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28251083/predictive-factors-for-photic-phenomena-after-refractive-rotationally-asymmetric-multifocal-intraocular-lens-implantation
#9
Hungwon Tchah, Kiyeun Nam, Aeri Yoo
AIM: To investigate the independent factors associated with photic phenomena in patients implanted with refractive, rotationally asymmetric, multifocal intraocular lenses (MIOLs). METHODS: Thirty-four eyes of 34 patients who underwent unilateral cataract surgery, followed by implantation of rotationally asymmetric MIOLs were included. Distance and near visual acuity outcomes, intraocular aberrations, preferred reading distances, preoperative and postoperative refractive errors, mesopic and photopic pupil diameters, and the mesopic and photopic kappa angles were assessed...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28251082/visual-performance-with-accommodating-and-multifocal-intraocular-lenses
#10
Jie Lan, Yu-Sen Huang, Yun-Hai Dai, Xiao-Ming Wu, Jia-Jun Sun, Li-Xin Xie
AIM: To compare the visual functional outcomes with accommodating and multifocal intraocular lenses (IOLs). METHODS: Our retrospective comparative study included 51 patients (60 eyes) received implantation of an accommodating IOL (Tetraflex; 16 patients, 20 eyes), a refractive multifocal IOL (ReZoom; 18 patients, 20 eyes), or a diffractive multifocal IOL (ZMA00; 17 patients, 20 eyes). Subjective refraction, visual acuity, contrast sensitivity (CS), intraocular aberration, and subjective photic phenomena were detected at 3mo after surgery...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28243021/comparison-of-anterior-capsule-stability-following-implantation-of-three-single-piece-acrylic-intraocular-lenses-with-different-haptic-design
#11
RANDOMIZED CONTROLLED TRIAL
Soonwon Yang, Sung A Lim, Kyung-Sun Na, Choun-Ki Joo
PURPOSE: To compare the anterior capsule contraction and intraocular lens (IOL) decentration among three types of IOL to determine the influence of haptic design on anterior capsule stability. METHODS: One hundred fifty patients were enrolled in this prospective, randomized study and 260 eyes underwent implantation of one of the following IOLs: modified L-haptic IOL (n = 74), modified C-haptic IOL (n = 97), or a plate-haptic IOL (n = 89). The area of the anterior capsule opening, IOL decentration, and capsule overlap were measured using retroillumination photospot 1 day and 2 months after cataract surgery...
February 2017: Korean Journal of Ophthalmology: KJO
https://www.readbyqxmd.com/read/28242111/cataracts
#12
REVIEW
Yu-Chi Liu, Mark Wilkins, Terry Kim, Boris Malyugin, Jodhbir S Mehta
An estimated 95 million people worldwide are affected by cataract. Cataract still remains the leading cause of blindness in middle-income and low-income countries. With the advancement of surgical technology and techniques, cataract surgery has evolved to small-incisional surgery with rapid visual recovery, good visual outcomes, and minimal complications in most patients. With the development of advanced technology in intraocular lenses, the combined treatment of cataract and astigmatism or presbyopia, or both, is possible...
February 23, 2017: Lancet
https://www.readbyqxmd.com/read/28237152/patient-comfort-and-visual-outcomes-of-mini-scleral-contact-lenses
#13
Peng Yan, Mustafa Kapasi, Ronan Conlon, Joshua C Teichman, Season Yeung, Yelin Yang, Setareh Ziai, Kashif Baig
OBJECTIVE: To evaluate short-term visual outcome, patient acceptance, and tolerance of mini-scleral contact lenses (SCLs) in the management of various corneal pathologies. DESIGN: Retrospective case series. PARTICIPANTS: Thirty-two patients (40 eyes) who received mini-SCLs. METHODS: Single-centre retrospective case series, between February 2010 and January 2013, of 32 patients (40 eyes) with various corneal pathologies who were offered either Maxim 5R, Maxim 7, or Maxim 7 × 11 mini-SCLs for nonsurgical optimization of visual correction...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28237150/spectacle-plane-add-power-of-multifocal-intraocular-lenses-according-to-effective-lens-position
#14
Youngsub Eom, Jong Suk Song, Hyo Myung Kim
OBJECTIVE: To evaluate the accuracy of predicting the spectacle plane add power of multifocal intraocular lenses (MIOLs) based on the effective lens position (ELP) using the Haigis formula. DESIGN: Retrospective cross-sectional study. PARTICIPANTS: A total of 26 eyes from 18 consecutive patients who underwent phacoemulsification with Tecnis MIOL (Z*B00) implantation. METHODS: The postoperative spectacle plane add power of MIOLs was determined from the monocular defocus curve...
February 2017: Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
https://www.readbyqxmd.com/read/28196497/comparison-of-visual-outcomes-spectacles-dependence-and-patient-satisfaction-of-multifocal-and-accommodative-intraocular-lenses-innovative-perspectives-for-maximal-refractive-oriented-cataract-surgery
#15
COMPARATIVE STUDY
Raffaele Nuzzi, Federico Tridico
BACKGROUND: The aim of this study was to evaluate visual outcomes for different working distances (far, 60 cm and 33 cm) and impact on vision quality of multifocal IOLs AcrySof ResTOR SN6AD1 and SN6AD3 (Alcon, Inc., Fort Worth, Texas, USA) as well as REVIEW FIL611PV multifocal and OPTOFLEX FIL618 accommodative IOLs (Soleko, Ltd., Rome, Italy) in patients undergoing bilateral phacoemulsification. METHODS: In this observational prospective study 63 patients undergoing binocular cataract surgery were divided into four groups for implantation of one of the IOLs under evaluation...
February 14, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28178942/in-vitro-comparative-optical-bench-analysis-of-a-spherical-and-aspheric-optic-design-of-the-same-iol-model
#16
Tamer Tandogan, Gerd U Auffarth, Chul Y Choi, Stephanie Liebing, Christian Mayer, Ramin Khoramnia
BACKGROUND: To analyse objective optical properties of the spherical and aspheric design of the same intraocular lens (IOL) model using optical bench analysis. METHODS: This study entailed a comparative analysis of 10 spherical C-flex 570 C and 10 aspheric C-flex 970 C IOLs (Rayner Intraocular Lenses Ltd., Hove, UK) of 26 diopters [D] using an optical bench (OptiSpheric, Trioptics, Germany). In all lenses, we evaluated the modulation transfer function (MTF) at 50 lp/mm and 100 lp/mm and the Strehl Ratio using a 3-mm (photopic) and 4...
February 8, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28165609/comparison-of-visual-outcomes-after-bilateral-implantation-of-extended-range-of-vision-and-trifocal-intraocular-lenses
#17
Ramón Ruiz-Mesa, Antonio Abengózar-Vela, Ana Aramburu, María Ruiz-Santos
PURPOSE: To compare visual outcomes after cataract surgery with bilateral implantation of 2 intraocular lenses (IOLs): extended range of vision and trifocal. METHODS: Each group of this prospective study comprised 40 eyes (20 patients). Phacoemulsification followed by bilateral implantation of a FineVision IOL (group 1) or a Symfony IOL (group 2) was performed. The following outcomes were assessed up to 1 year postoperatively: binocular uncorrected distance visual acuity (UDVA), binocular uncorrected intermediate visual acuity (UIVA) at 60 cm, binocular uncorrected near visual acuity (UNVA) at 40 cm, spherical equivalent (SE) refraction, defocus curves, mesopic and photopic contrast sensitivity, halometry, posterior capsule opacification (PCO), and responses to a patient questionnaire...
January 28, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28161802/influence-of-across-pupil-sutures-on-the-optical-quality-of-intraocular-lenses
#18
Chang Rae Rho, Min-Ji Kim, Choun-Ki Joo
PURPOSE: In cases of pupillary capture after previous transscleral fixation of an intraocular lens (IOL), an across-pupil suture technique is sometimes used to stabilize the IOL. We investigated the optical effects of 10-0 polypropylene sutures placed across the pupil. METHODS: Optical performance was evaluated using the optical bench metrology system, and a single-piece IOL was used in an optical bench system consisting of a model eye, a high-resolution Hartmann-Shack wave front sensor, and an image capturing device with 2...
February 4, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28149789/prevalence-of-pseudoexfoliation-syndrome-and-its-association-with-ocular-and-systemic-diseases-in-eskisehir-turkey
#19
Nilgun Yildirim, Erdogan Yasar, Huseyin Gursoy, Ertugrul Colak
AIM: To investigate the prevalence of pseudoexfoliation syndrome (PEX) and its associations with ocular and systemic diseases in a population sample aged over 40y. METHODS: A total of 2356 subjects were randomly chosen for the sample population based on the database of the Turkish Statistical Agency in Eskisehir. Of the invited 2356 subjects, 2017 subjects participated, out of which 2009 were eligible for the study. Systemic diseases, drug use, smoking and body mass index were assessed using questionnaires...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28112126/the-posterior-iris-claw-lens-outcome-study-6-month-follow-up
#20
Nana Madhukar Jare, Ashwini Ganesh Kesari, Salil S Gadkari, Madan D Deshpande
PURPOSE: The purpose of this study was to evaluate functional and anatomical outcomes of posterior iris-claw intraocular lens (IOL) implant for correction of aphakia in eyes with inadequate capsular support. MATERIALS AND METHODS: Prospective case series of 108 aphakic eyes with inadequate capsular support which underwent posterior iris-claw IOL with a 6-month follow-up period was conducted. The cases belonged to two clinical settings: elective secondary implantation and those with intraoperative posterior dislocation of cataractous lens or IOL...
December 2016: Indian Journal of Ophthalmology
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