Abstract：
PURPOSE:To describe a method for optimizing the treatment of astigmatism using vector analysis of both refractive and corneal topographic values. SETTING:Cheltenham Eye Centre, Melbourne, Australia. METHODS:This study evaluated a method of vector analysis for planning surgery that uses both preoperative topographic and refractive values and determined how to select the relative treatment emphasis to be given to each. In addition, the significance of the phenomenon of ocular residual astigmatism (ORA) was explored. Its presence provides an inherent limitation on eliminating astigmatism from the eye's optical system. RESULTS:Various comparisons of preoperative and ORA values are plotted in a series of 100 excimer laser photoastigmatic refractive keratectomy patients. These ORA values are equivalent to the expected corneal astigmatism resulting from surgery where treatment is performed by refractive astigmatism values alone. A theoretical example is given in which the corneal astigmatism remaining from surgery is reduced by giving less emphasis to completely eliminating refractive astigmatism and consequently greater emphasis to completely eliminating topographic astigmatism. CONCLUSION:Using vectors in astigmatism surgery enables the incorporation of topography and refractive values into the surgical plan. This would achieve a greater reduction in corneal astigmatism and potentially a better visual outcome than using refractive astigmatism values alone.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Alpins NAdoi
10.1016/s0886-3350(97)80153-8subject
Has Abstractpub_date
1997-01-01 00:00:00pages
65-75issue
1eissn
0886-3350issn
1873-4502pii
S0886-3350(97)80153-8journal_volume
23pub_type
杂志文章abstract：PURPOSE:To assess how intraocular lens (IOL) formula choice affects refractive outcomes after cataract surgery using IOLMaster biometry. SETTING:Department of Ophthalmology, Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, United Kingdom. DESIGN:Database study. METHODS:Hypothetical prediction errors were ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2010.07.032
更新日期：2011-01-01 00:00:00
abstract：:Cataract extraction with posterior chamber intraocular lens implantation is rarely complicated by an acute, sterile, anterior segment inflammation. We report three unrelated cases of acute intraocular inflammation following uncomplicated cataract extraction and posterior chamber intraocular lens placement. A constella...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80929-7
更新日期：1992-03-01 00:00:00
abstract：:We present a simple, effective technique to remove an intraocular lens (IOL) via a very small incision (2.2 mm). After the IOL is carefully removed from the capsular bag, into the anterior chamber, 2 radial incisions, 35 degrees to 50 degrees apart, are made with a Vannas scissors. This results in 2 IOL pieces (maximu...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2009.02.036
更新日期：2009-07-01 00:00:00
abstract：:Iris fixation of posterior chamber intraocular lenses (IOLs) is a technique that has been recommended for patients in whom a posterior chamber IOL is indicated but there is insufficient capsular support. We present 4 cases of iris-fixated posterior chamber IOLs with complications related to the procedure. Three patien...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.06.048
更新日期：2005-12-01 00:00:00
abstract：:Subepithelial fibrosis in the area of peripheral suture placement is an often overlooked phenomenon of healing following uneventful penetrating keratoplasty surgery. Three affected cornea transplant patients whose sutures had been removed were studied using videophotokeratoscopy before and after stripping of the subep...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(96)80282-3
更新日期：1996-01-01 00:00:00
abstract：:A 56-year-old man developed a nasal field defect in his left eye 3 months after a traumatic accident. An examination showed a posterior subcapsular cataract in the left eye with no neurologic deficits. Humphrey 24-2 visual field testing revealed a nasal hemianopsia in the left eye. After cataract extraction and intrao...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)00152-2
更新日期：1999-09-01 00:00:00
abstract：:We report a patient who developed an anaphylactic reaction several minutes after intracameral injection of cefuroxime at the end of uneventful phacoemulsification and intraocular lens implantation surgery. The patient had a known allergy to penicillin but not to cefuroxime. This rare life-threatening complication was ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2013.06.008
更新日期：2013-09-01 00:00:00
abstract：PURPOSE:To evaluate the intraoperative difficulties and long-term outcome of phacoemulsification through a small pupil using minimal iris manipulation. SETTINGS:Iladevi Cataract & IOL Research Centre, Ahmedabad, India. METHODS:This prospective study included 30 consecutive eyes with a maximally dilated pupil size of ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(00)00361-8
更新日期：2000-08-01 00:00:00
abstract：:We received approval from the U.S. implant Food and Drug Administration and the University's Institutional Review Board to the Artisan lens (Ophtec BV) in both eyes of a patient who was aphakic and had megalocornea. No other intraocular lens would easily solve this patient's need because of the large anterior segment....
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.12.060
更新日期：2006-03-01 00:00:00
abstract：UNLABELLED:We describe a case of unilateral corneal ectasia in a 26-year-old man following small-incision lenticule extraction. The preoperative corneal topography was normal, with a minimum corneal thickness of 511 μm and 513 μm in the right eye and left eye, respectively. Lenticules of 85 μm and 82 μm were fashioned ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.08.006
更新日期：2015-09-01 00:00:00
abstract：PURPOSE:To assess patient comfort with and without intravenous (i.v.) cannulation during 1-quadrant sub-Tenon's anesthesia during phacoemulsification. SETTING:Royal Alexandra Hospital, Paisley, Scotland, United Kingdom. METHODS:This prospective masked controlled clinical trial comprised 119 patients having elective c...
journal_title：Journal of cataract and refractive surgery
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0886-3350(03)00247-5
更新日期：2003-06-01 00:00:00
abstract：PURPOSE:To compare the efficacy of intracameral cefuroxime versus subconjunctival cefuroxime in reducing the rate of endophthalmitis after cataract surgery. SETTING:Single-specialty eye hospital, Sunderland, United Kingdom. METHODS:A retrospective analysis of all presumed infectious endophthalmitis cases from January...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.10.041
更新日期：2008-03-01 00:00:00
abstract：PURPOSE:To study refraction variations during the day in eyes with intrastromal corneal ring segments (ICRS) to correct low myopia. SETTING:Monticelli Clinic, Marseille, France. METHODS:Thirteen eyes with ICRS were included in the study; the ICRS was explanted from 3 eyes because of undercorrection. The minimum follo...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)00129-7
更新日期：1999-08-01 00:00:00
abstract：PURPOSE:To report the clinical outcomes of implantation of a new Ferrara intrastromal corneal ring segment (ICRS) with a 210-degree arc length in eyes with keratoconus. SETTING:Private eye clinic, Belo Horizonte, Brazil METHODS:Statistical analysis included preoperative and postoperative uncorrected distance visual a...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2009.04.035
更新日期：2009-09-01 00:00:00
abstract：PURPOSE:To assess the accuracy of intraocular lens (IOL) power calculation formulas in Chinese eyes with axial lengths (ALs) longer than 26.0 mm. SETTING:Department of Cataract Surgery, Shanxi Eye Hospital, China. DESIGN:Prospective case series. METHODS:This study evaluated (1) two new formulas (Barrett Universal II...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2019.01.018
更新日期：2019-06-01 00:00:00
abstract：PURPOSE:To present a series of cases in which the four-flanged technique was used in the management of in-the-bag intraocular lens (IOL) subluxation. SETTING:Shamir medical center, Israel. DESIGN:Retrospective cohort analysis. METHODS:Included were consecutive cases with secondary IOL subluxation that underwent scle...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000474
更新日期：2020-11-02 00:00:00
abstract：PURPOSE:To implant a small-aperture intraocular lens (IOL) (IC-8) in eyes with severe corneal irregularities to reduce higher-order aberrations and provide better central visual acuity. SETTING:University Hospital, LMU Munich, Germany. DESIGN:Prospective nonrandomized interventional case series. METHODS:Eyes with se...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000045
更新日期：2020-02-01 00:00:00
abstract：PURPOSE:To determine the clinical outcomes of isolated Descemet membrane transplantation (ie, Descemet membrane endothelial keratoplasty [DMEK]) in phakic eyes. SETTING:Tertiary referral center. DESIGN:Cohort study. METHODS:Phakic eyes from a larger group of consecutive eyes that had DMEK for Fuchs endothelial dystr...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2011.11.038
更新日期：2012-05-01 00:00:00
abstract：PURPOSE:To evaluate the refractive accuracy of intraocular lens (IOL) power calculation after phacovitrectomy. SETTING:Eye Hospital Zonnestraal and Department of Ophthalmology Academic Medical Center, Amsterdam, the Netherlands. DESIGN:Retrospective comparative case series. METHODS:Refraction results 1 month after p...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2016.03.034
更新日期：2016-06-01 00:00:00
abstract：:Posterior-assisted levitation is used to retrieve and levitate a sinking nucleus in cataract surgery associated with posterior capsule rupture. After the nucleus is levitated in the anterior chamber, the intraocular lens (IOL) scaffold procedure helps emulsify the nuclear remnants with the phacoemulsification probe an...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2017.06.004
更新日期：2017-07-01 00:00:00
abstract：PURPOSE:To study the incidence of and risk factors for pupillary capture after transscleral fixation of a posterior chamber intraocular lens (PC IOL) for dislocated IOLs. SETTING:Department of Ophthalmology, Kyungpook National University Hospital, Daegu, South Korea. DESIGN:Retrospective case series. METHODS:Charts ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2016.05.006
更新日期：2016-08-01 00:00:00
abstract：:The optical resolution and contrast of 18 silicone and 18 polymethylmethacrylate (PMMA) intraocular lenses were determined before implantation in and after removal from rabbit eyes. A specially designed microphotographic system that allows documentation and comparison of the image quality of different lens types was u...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(87)80153-0
更新日期：1987-11-01 00:00:00
abstract：PURPOSE:To assess the practical feasibility and signal quality of axial length measurements by partial coherence laser interferometry in silicone oil-filled eyes with previous complicated vitreoretinal surgery. SETTINGS:Department of Ophthalmology, University Cologne, Cologne, Germany. METHODS:Using a Zeiss IOLMaster...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.09.049
更新日期：2005-05-01 00:00:00
abstract：PURPOSE:To study the microanatomic edge structures of anterior lens capsule specimens derived from manual and femtosecond laser-assisted capsulotomies. SETTING:Department of Ophthalmology, Goethe-University, Frankfurt, Germany. DESIGN:Experimental study. METHODS:Of 60 eyes with lens removal and intraocular lens impl...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2013.07.024
更新日期：2013-10-01 00:00:00
abstract：PURPOSE:To define factors affecting cataract surgery operating time for operating room planning, optimizing throughput, enhancing patient experiences, minimizing costs, and allocating training time. SETTING:Epsom and St. Helier University National Health Service Trust, London, United Kingdom. DESIGN:Retrospective cas...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2019.01.002
更新日期：2019-06-01 00:00:00
abstract：PURPOSE:To compare the effect of topical dexamethasone versus ketorolac versus combined dexamethasone-ketorolac after phacoemulsification on choroidal thickness (CT). SETTING:A tertiary university-based hospital Design: Prospective non-randomized comparative case series METHODS:: Ninety-two eyes of 92 patients were as...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000477
更新日期：2020-11-12 00:00:00
abstract：:The desire for rapid visual rehabilitation following phacoemulsification for cataract and intraocular lens implantation has stimulated a quest for an "astigmatically neutral" incision. We have evaluated an underemphasized aspect of wound closure technique for a small incision wound (5.1 mm). The essential element of t...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80688-8
更新日期：1991-01-01 00:00:00
abstract：PURPOSE:To evaluate the effect of neodymium:YAG (Nd:YAG) laser capsulotomy on the visual function in patients with posterior capsule opacification (PCO) and good visual acuity. SETTING:Keio University Hospital, Tokyo, Japan. DESIGN:Observational case series. METHODS:Eyes were evaluated that had previous cataract sur...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.11.042
更新日期：2016-03-01 00:00:00
abstract：PURPOSE:To evaluate negative dysphotopsia in the far periphery of the pseudophakic eye by generating simulated images of text charts. SETTING:Consultancy. DESIGN:Laboratory study. METHODS:Simulated images of a peripheral text chart were created using a ray-trace model of a pseudophakic eye. The point spread function...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000103
更新日期：2020-03-01 00:00:00
abstract：PURPOSE:To determine whether residual myopia after primary laser-assisted subepithelial keratectomy (LASEK) can be corrected by repeated LASEK and whether this procedure is safe and effective. SETTING:University Eye Clinic, University of Regensburg, Regensburg, Germany. METHODS:Laser-assisted subepithelial keratectom...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(03)00253-0
更新日期：2003-07-01 00:00:00
