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Xinjie Mao, James T Banta, Bilian Ke, Hong Jiang, Jichang He, Che Liu, Jianhua Wang
PURPOSE: To assess wavefront derived refraction and full eye biometry including ciliary muscle dimension and full eye axial geometry in pseudophakic eyes using spectral domain OCT equipped with a Shack-Hartmann wavefront sensor. METHODS: Twenty-eight adult subjects (32 pseudophakic eyes) having recently undergone cataract surgery were enrolled in this study. A custom system combining two optical coherence tomography systems with a Shack-Hartmann wavefront sensor was constructed to image and monitor changes in whole eye biometry, the ciliary muscle and ocular aberration in the pseudophakic eye...
2016: PloS One
Samuel Arba Mosquera, Jorge L Alió
PURPOSE: The aim of this systematic review was to synthesize and appraise the evidence of the benefits of presbyopic correction on the cornea for visual function. SUMMARY: Comprehensive search was conducted in MEDLINE using keywords like "presbylasik", "presbyopic refractive surgery", "corneal pseudoaccommodation" and "corneal multifocality". We reviewed corrected and uncorrected visual acuities for distance and near (uncorrected distance visual acuity (UDVA), uncorrected near visual acuity (UNVA), corrected distance visual acuity (CDVA), distance corrected near visual acuity (DCNVA), corrected near visual acuity (CNVA)), along with the refractive outcomes in spherical equivalent (SE) and astigmatism comparing the differences observed between preoperative myopic and hyperopic patients, as well as among techniques...
2014: Eye and Vision (London, England)
Edward Khawam, Bachir Abiad, Alaa Boughannam, Joanna Saade, Ramzi Alameddine
Great discrepancies are often encountered between the distance fixation and the near-fixation esodeviations and exodeviations. They are all attributed to either anomalies of the AC/A ratio or anomalies of the fusional convergence or divergence amplitudes. We report a case with pseudoconvergence insufficiency and another one with pseudoaccommodative convergence excess. In both cases, conv./div. excess and insufficiency were erroneously attributed to anomalies of the AC/A ratio or to anomalies of the fusional amplitudes...
2015: Case Reports in Ophthalmological Medicine
F T A Kretz, M A S Attia, K Linz, G U Auffarth
PURPOSE: The aim of this study was to make an evaluation of the pseudoaccommodation span and clinical results after implantation of a diffractive, apodised and trifocal multifocal intraocular lens (MIOL). METHODS: In a prospective, single-centre study 28 eyes of 14 patients were evaluated after in the bag implantation of the Micro-F MIOL (PhysIOL, Belgium) during routine microsurgical cataract surgery. Two to four months postoperatively the final examinations were performed...
August 2015: Klinische Monatsblätter Für Augenheilkunde
Béatrice Cochener, Jérome Vryghem, Pascal Rozot, Gilles Lesieur, Jean-Paul Chevalier, Jean-Marie Henry, Thierry David, Laurence Lesueur, Damien Gatinel, Cati Ganem, Johan Blanckaert, Emmanuel Van Acker, Steven Heireman, Sofie Ghekiere
PURPOSE: To evaluate the clinical results and safety obtained with a new type of multifocal intraocular lens (IOL) using a trifocal design to achieve pseudoaccommodation. METHODS: A pilot observational study of patients with a trifocal IOL (FineVision; PhysIOL, Liege, Belgium) implanted by 1 of 12 surgeons between March and December 2010. Visual outcomes that were assessed postoperatively included uncorrected and corrected distance, intermediate, and near visual acuity...
November 2014: Journal of Refractive Surgery
Gonzalo Muñoz, César Albarrán-Diego, Lurdes Belda, Stephanie Rohrweck
PURPOSE: To compare the clinical outcomes of add-on sulcus-based multifocal and standard in-the-bag multifocal intraocular lens (IOL) implantation. METHODS: Twenty-one patients with unilateral monofocal pseudophakia underwent add-on sulcus-based Acri. LISA 536D multifocal IOL (Carl Zeiss Meditec, Jena, Germany) implantation (add-on multifocal IOL group) and contralateral phacoemulsification with in-the-bag Acri.LISA 376D multifocal IOL (Carl Zeiss Meditec) implantation (primary multifocal IOL group)...
May 2014: Journal of Refractive Surgery
Boris Malyugin, Tatiana Morozova, Valentin Cherednik
PURPOSE: To present the theoretical optical background and clinical results of a new multifocal intraocular lens (MIOL) concept-gradient refractive index optics (Gradiol). PATIENTS AND METHODS: Original mathematical modeling software was used to calculate optimal construction of the MIOL optic constructed from two polymer materials with different refractive indices. Gradiol lenses were manufactured from hydrophobic acrylic utilizing original step-by-step polymerization technology with the final power difference of of 3...
January 2014: Middle East African Journal of Ophthalmology
Pablo Pérez-Merino, Judith Birkenfeld, Carlos Dorronsoro, Sergio Ortiz, Sonia Durán, Ignacio Jiménez-Alfaro, Susana Marcos
PURPOSE: To evaluate the objective accommodative response, change of aberrations, and depth of focus in eyes implanted with the Crystalens accommodative intraocular lens (IOL) at different accommodative demands. DESIGN: Prospective, observational study. METHODS: Eleven cataract patients (22 eyes) who underwent implantation of a Crystalens accommodative IOL, and control groups of 9 normal subjects (17 eyes) and 17 pseudophakic patients (17 eyes) implanted with monofocal IOLs were evaluated...
May 2014: American Journal of Ophthalmology
Hun Lee, Kwanghyun Lee, Ji Min Ahn, Eung Kweon Kim, Bradford Sgrignoli, Tae-Im Kim
PURPOSE: To compare the optical quality measurements obtained from the double-pass system and ocular aberrations, subjective visual acuity, and contrast sensitivity score in pseudophakic eyes. METHODS: Three months after cataract surgery, modulation transfer function (MTF) cutoff frequency, Strehl ratio, objective scatter index, and objective pseudoaccommodation obtained from the double-pass system were compared with total aberration, higher-order aberration, and spherical aberration obtained from ray-tracing aberrometer...
April 2014: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Nian Tan, Dengyi Zheng, Jian Ye
PURPOSE: To compare the performance of accommodative, multifocal, and monofocal intraocular lenses (IOLs). METHODS: In this clinical control study, 3 types of IOL were implanted in 128 eyes of 86 patients with age-related cataract who underwent phacoemulsification. Accommodative (Tetraflex), multifocal (ZMA00), and monofocal (Akreos Advanced Optics [AO]) IOLs were implanted into 43, 40, and 45 eyes, respectively. The uncorrected, best-corrected distance, contrast sensitivity, and distance-corrected intermediate and near visual acuity (UCDVA, BCDVA, CSVA, DCIVA, and DCNVA, respectively), amplitude of pseudoaccommodation, and patient satisfaction were measured at 1, 3, and 12 months after surgery...
September 2014: European Journal of Ophthalmology
Tomo Nishi, Futoshi Taketani, Tetsuo Ueda, Nahoko Ogata
PURPOSE: To determine the amplitude of pseudoaccommodation and higher-order aberrations with three types of implanted monofocal intraocular lenses (IOLs): aspheric yellow (IQ); spheric yellow (NT); and spheric clear (AT). SETTING: Department of Ophthalmology, Nara Medical University, Nara, Japan. METHODS: We studied 60 patients who underwent small incision phacoemulsification with the implantation of a monofocal IQ, NT, or AT IOL. The pseudoaccommodation was measured by the lens-loading method, and the postoperative ocular higher-order aberrations were measured with a Hartmann-Shack wavefront analyzer through natural and 4 mm pupils...
2013: Clinical Ophthalmology
Colm McAlinden, Eirini Skiadaresi, Damien Gatinel, Florence Cabot, Jinhai Huang, Konrad Pesudovs
PURPOSE: The purpose of this study is to evaluate the interchangeability of the three subscales of the Quality of Vision (QoV) questionnaire: Frequency, Severity and Bothersome. This will indicate if any of the subscales are predictive of one another and whether respondents need to complete all three subscales. METHODS: Data from four studies were pooled together, totaling 1930 completed questionnaires. Patient groups consisted of spectacle wearers, contact lens wearers, post-laser refractive surgery (including laser in situ keratomileusis, laser-assisted subepithelial keratectomy, and photorefractive keratectomy surgeries for various refractive errors), patients with cataract, and patients having undergone lens implantation surgery (consisting of monofocal, multifocal, and pseudoaccommodative intraocular lenses)...
August 2013: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Kazuhiro Watanabe, Kazuno Negishi, Murat Dogru, Takefumi Yamaguchi, Hidemasa Torii, Kazuo Tsubota
PURPOSE: To study the effect of pupil size on the relationship between refractive astigmatism and uncorrected distance visual acuity (UDVA) and pseudoaccommodation in pseudophakic eyes. METHODS: Thirty-six eyes from 36 patients who underwent phacoemulsification and intraocular lens (IOL) implantation were included. All eyes were divided into two groups based on the presence of postoperative-with-the-rule astigmatism or against-the-rule astigmatism. Uncorrected and corrected distance visual acuity (CDVA), refractive astigmatism, subjective accommodation amplitude, and pupil sizes under photopic and mesopic conditions were measured 1 month postoperatively...
January 2013: Journal of Refractive Surgery
Jing Ji, Xiaolin Huang, Xianqun Fan, Min Luo
The aim of this study was to compare the visual performance of Acrysof ReSTOR and Acrysof Natural intraocular lenses (IOLs) following cataract surgery. A randomized prospective study was performed in which 64 eyes (51 patients) were divided randomly into two groups. Monofocal IOLs (Acrysof Natural) were implanted into 34 eyes (27 patients) and multifocal IOLs (Acrysof ReSTOR) were implanted into 30 eyes (24 patients) using phacoemulsification surgery. The corrected distance visual acuity, near visual acuity, pseudoaccommodation, contrast sensitivity (CS) and wavefront analysis were measured at 1 week, 1 month and 3 months after surgery...
January 2013: Experimental and Therapeutic Medicine
George H H Beiko
PURPOSE: To compare near vision and quality of vision after controlling for pseudoaccommodation in patients with single-optic accommodating intraocular lenses (IOLs) or monofocal IOLs targeted for mini-monovision. SETTING: Clinical practice. DESIGN: Prospective randomized controlled clinical trial. METHODS: Patients were randomized to bilateral implantation of the Crystalens HD silicone accommodating IOL, the Tetraflex acrylic accommodating IOL, or the Tecnis 1-piece monofocal (nonaccommodating) control IOL...
January 2013: Journal of Cataract and Refractive Surgery
D Uthoff, W Haigis, D Hepper, M Pölzl, D Holland
PURPOSE: The aim of this study was to compare the validity and plausibility of various subjective and objective measurement methods for evaluation of pseudophakic accommodation. SETTING: Eye Clinic Bellevue, Kiel, Germany. METHODS: A total of 21 patients were examined over an average period of 34 months (range 12-51 months) after implantation of a potentially accommodative, model 1CU intraocular lens (IOL, HumanOptics, Germany). The following subjective measurements were taken: near point measurement with the accommodometer (Clement Clarke, Harlow, UK), defocus curve and near visual acuity with far and near reading charts...
May 2013: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
V M Sheludchenko
Defocusing of visual acuity was performed in 102 patients after cataract surgery with binocular implantation of multifocal IOL of refractive type "Rayner" with different presbyopic shift and their combinations: 3/3, 4/4 and 3/4 D. The best stability of different distance visual acuity was observed in anisomultifocal implantation, that optimizes pseudoaccommodative visual perception.
January 2012: Vestnik Oftalmologii
Elizabeth Yeu, Li Wang, Douglas D Koch
PURPOSE: To determine the effect on corneal pseudoaccommodation of anterior corneal wavefront aberrations in normal corneas and corneas with prior myopic or hyperopic photorefractive keratectomy (PRK) or laser-assisted in situ keratomileusis (LASIK). DESIGN: Theoretical study. METHODS: In 220 normal eyes, 102 myopic-PRK eyes, and 106 hyperopic-LASIK/PRK eyes, anterior corneal higher-order aberrations (HOAs, third to sixth order, 6- and 4-mm pupils) were computed from the Atlas corneal elevation data using the VOL-CT program...
May 2012: American Journal of Ophthalmology
Manickam Thiagarajan, Rory McClenaghan, David F Anderson
PURPOSE: To compare the visual performance after implantation of the Akreos Adapt Advanced Optics aspheric intraocular lens (IOL) and the Sensar AR40e spherical acrylic IOL. SETTING: Eye Department, Southampton University Hospital, United Kingdom. DESIGN: Randomized masked single-center clinical trial. METHODS: Patients with bilateral cataract who were older than 50 years with a biometry-predicted IOL power between 10...
November 2011: Journal of Cataract and Refractive Surgery
Ioannis G Pallikaris, Georgios A Kontadakis, Dimitra M Portaliou
In the attempt to manage presbyopia, different intraocular lens designs have been proposed such as monofocal IOLs with monovision or multifocal IOLs. Even though the lenses mentioned offer satisfactory visual results, contemporary ophthalmology has not completely answered the presbyopic dilemma by simulating the accommodative properties of the crystalline lens itself. Accommodative IOLs were designed to fill this gap and provide satisfactory vision for all distances by restoring some degree of "pseudoaccommodation...
2011: Journal of Ophthalmology
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