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Bruce allan ocular

Vincenzo Maurino, Bruce D Allan, Gary S Rubin, Catey Bunce, Wen Xing, Oliver Findl
PURPOSE: To compare postoperative visual symptoms and spectacle freedom after bilateral implantation of the AT LISA 809M (Carl Zeiss Meditec, Jena, Germany) versus the AcrySof ReSTOR SN6AD1 (Alcon Laboratories, Irvine, CA) multifocal intraocular lens (IOL). DESIGN: Double-masked, prospective, randomized, controlled clinical trial. PARTICIPANTS: A total of 188 patients undergoing bilateral sequential cataract surgery or bilateral refractive lens exchange...
April 2015: Ophthalmology
Hon Shing Ong, Jennifer R Evans, Bruce D S Allan
BACKGROUND: Following cataract surgery and intraocular lens (IOL) implantation, loss of accommodation or postoperative presbyopia occurs and remains a challenge. Standard monofocal IOLs correct only distance vision; patients require spectacles for near vision. Accommodative IOLs have been designed to overcome loss of accommodation after cataract surgery. OBJECTIVES: To define (a) the extent to which accommodative IOLs improve unaided near visual function, in comparison with monofocal IOLs; (b) the extent of compromise to unaided distance visual acuity; c) whether a higher rate of additional complications is associated the use of accommodative IOLs...
2014: Cochrane Database of Systematic Reviews
Alex J Shortt, Bruce D S Allan, Jennifer R Evans
BACKGROUND: Myopia (also known as short-sightedness or near-sightedness) is an ocular condition in which the refractive power of the eye is greater than is required, resulting in light from distant objects being focused in front of the retina instead of directly on it. The two most commonly used surgical techniques to permanently correct myopia are photorefractive keratectomy (PRK) and laser-assisted in-situ keratomileusis (LASIK). OBJECTIVES: To compare the effectiveness and safety of LASIK and PRK for correction of myopia by examining post-treatment uncorrected visual acuity, refractive outcome, loss of best spectacle-corrected visual acuity, pain scores, flap complications in LASIK, subepithelial haze, adverse events, quality of life indices and higher order aberrations...
January 31, 2013: Cochrane Database of Systematic Reviews
Bruce D Allan, Hala Hassan
PURPOSE: To explore the use of the Pulsar Z1 solid-state 213 nm photorefractive laser platform in topography-guided transepithelial photorefractive keratectomy (PRK) for irregular astigmatism. SETTING: Moorfields Eye Hospital, London, United Kingdom. DESIGN: Prospective clinical case series. METHODS: Patients with irregular astigmatism after previous refractive surgery or corneal transplantation were treated with topography-guided transepithelial PRK...
January 2013: Journal of Cataract and Refractive Surgery
Sidath E Liyanage, Bruce D Allan
PURPOSE: To develop a systematic method for quantifying pretreatment adjustments to the treatment sphere in patients having myopic wavefront laser in situ keratomileusis (LASIK). SETTING: Moorfields Eye Hospital, London, United Kingdom. DESIGN: Comparative case series. METHODS: Preoperative and 3-month postoperative data from consecutive cases of myopic wavefront LASIK (<10.0 diopters [D] sphere; <4.5 D cylinder) treated in 2008-2009 were tabulated...
July 2012: Journal of Cataract and Refractive Surgery
Katherine A Rauen, Lisa Schoyer, Frank McCormick, Angela E Lin, Judith E Allanson, David A Stevenson, Karen W Gripp, Giovanni Neri, John C Carey, Eric Legius, Marco Tartaglia, Suzanne Schubbert, Amy E Roberts, Bruce D Gelb, Kevin Shannon, David H Gutmann, Martin McMahon, Carmen Guerra, James A Fagin, Benjamin Yu, Yoko Aoki, Benjamin G Neel, Allan Balmain, Richard R Drake, Garry P Nolan, Martin Zenker, Gideon Bollag, Judith Sebolt-Leopold, Jackson B Gibbs, Alcino J Silva, E Elizabeth Patton, David H Viskochil, Mark W Kieran, Bruce R Korf, Randi J Hagerman, Roger J Packer, Teri Melese
The RASopathies are a group of genetic syndromes caused by germline mutations in genes that encode components of the Ras/mitogen-activated protein kinase (MAPK) pathway. Some of these syndromes are neurofibromatosis type 1, Noonan syndrome, Costello syndrome, cardio-facio-cutaneous syndrome, LEOPARD syndrome and Legius syndrome. Their common underlying pathogenetic mechanism brings about significant overlap in phenotypic features and includes craniofacial dysmorphology, cardiac, cutaneous, musculoskeletal, GI and ocular abnormalities, and a predisposition to cancer...
January 2010: American Journal of Medical Genetics. Part A
Francisco Arnalich-Montiel, Clare M Wilson, Steven J Morton, Bruce D Allan
PURPOSE: To examine strategies for adjusting the ablation sphere in myopic wavefront laser in situ keratomileusis (LASIK) with reference to preoperative manifest refraction. SETTING: Refractive Surgery Service, Moorfields Eye Hospital, London, United Kingdom. METHODS: The variance in the 3-month postoperative manifest refraction spherical equivalent (MRSE) results in 295 consecutive cases of myopic wavefront LASIK treated with a nonsystematic, intuitive approach to pretreatment adjustment of the ablation sphere was compared with the variance in modeled results obtained by back-calculation using 4 systematic strategies: (1) no adjustment (No Adj), (2) addition of the difference between the preoperative MRSE and the preoperative 4...
July 2009: Journal of Cataract and Refractive Surgery
Gerry Clare, John A Pitts, Ken Edgington, Bruce D Allan
No abstract text is available yet for this article.
April 2010: British Journal of Ophthalmology
, Bruce Allan
PURPOSE: To compare vision-related quality of life after binocular implantation of the Tecnis Z9000 intraocular lens (IOL) (Advanced Medical Optics) or the AcrySof MA60AC IOL (Alcon). SETTING: Moorfields Eye Hospital, London, United Kingdom. METHODS: The study was a double-masked prospective randomized controlled trial. The main outcome measure was the percentage of patients achieving a Visual Function-14 (VF-14) score of 90 or higher. Additional outcome measures were dysphotopsia symptom scores, a 5-point subjective grading of overall satisfaction, refraction, photopic and mesopic best corrected visual acuities, uncorrected visual acuity, Pelli-Robson contrast sensitivity, aberrometry, infrared pupillometry, and evaluation of posterior capsule opacification scores...
September 2007: Journal of Cataract and Refractive Surgery
Robert E MacLaren, Mythili Natkunarajah, Yasmin Riaz, Rupert R A Bourne, Marie Restori, Bruce D S Allan
PURPOSE: To audit intraocular lens (IOL) power predictions for cataract surgery in extreme hyperopia and to compare the accuracy across different biometry formulae and IOL types. DESIGN: A retrospective analysis of 76 eyes from 56 patients undergoing cataract surgery with IOLs ranging in power from 30 to 35 diopters (D). METHODS: Axial lengths, corneal powers and anterior chamber depths were measured with ultrasound or optical methods, and the IOLMaster (Carl Zeiss Meditech, Inc, Dublin, California, USA) software was used to predict the refractive outcome for each IOL used...
June 2007: American Journal of Ophthalmology
Robert E MacLaren, Mandeep S Sagoo, Marie Restori, Bruce D S Allan
PURPOSE: To audit the accuracy of biometry using the SRK/T formula when negative- or zero-powered intraocular lenses (IOLs) are predicted and to compare the results between A-scan, B-scan, and optical methods of biometry. SETTING: Moorfields Eye Hospital, London, United Kingdom. METHODS: This retrospective analysis comprised 78 eyes of 54 patients having cataract surgery with zero- or negative-powered IOLs. Axial lengths were measured with A-scan, B-scan, applanation, or optical methods...
February 2005: Journal of Cataract and Refractive Surgery
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