Abstract:
PURPOSE:To investigate the reliability of corneal topography measurements using the Orbscan II topography system (Bausch & Lomb) not only referring to a normal cohort but also to different refractive conditions. SETTING:Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany. METHODS:Eighty patients (mean age 46.4 +/- 19.0 years) were assigned to 4 refractive groups (Group A: emmetropia (n=20); Group B: astigmatism (n=20) (-1.98 +/- 1.77 diopters [D]); Group C: hyperopia (n=20) (+4.84 +/- 1.6 D); Group D: myopia (n=20) (-9.64 +/- 3.79 D). Three measurements were performed in a series. Thirteen defined, standardized points of the entire cornea (apex, 3.0 mm, 5.0 mm, and 7.0 mm zone) were evaluated for 3 different maps (anterior elevation, pachymetry, keratometry). RESULTS:In all 80 patients, the following mean values were found in relation to analyzed zones: with regard to the anterior elevation map, the values decreased from 5.53 microm (center) to -6.52 microm (7.0 mm zone), the corneal thickness increased from 549.41 microm to 638.63 microm peripheral and the keratometry from 43.86 D (apex) to 45.4 D (7.0 mm zone), respectively. Analysis of the 3 different maps in all 4 refraction groups showed a tendency toward an increase in SD from the center to the 7.0 mm zone for anterior elevation and pachymetry maps. For keratometry, however, the lowest SD was found in the 7.0 mm zone. In particular, patients with hyperopia showed significant differences (P<.01), compared with emmetropic patients; the SD was higher with regard to anterior elevation as well as keratometry in peripheral zones. Group B (astigmatism) showed significantly higher SD for anterior elevation in zones 3.0, 5.0, and 7.0 mm when compared with emmetropic patients. CONCLUSIONS:The repeated Orbscan II measurements showed SD in the micrometer range for anterior elevation and pachymetry but values between 0.48 D and 0.97 D for keratometric data. Patients with astigmatism and especially hyperopia showed significantly higher SD values in peripheral zones for anterior elevation and keratometry, indicating a lower reliability, compared with the emmetropic cohort. However, the different ages of the patients could also be a possible explanation for these findings. Therefore, the Orbscan II seems to be a predictable and useful device for measuring corneal topography.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Rabsilber TM,Becker KA,Auffarth GUdoi
10.1016/j.jcrs.2005.01.013subject
Has Abstractpub_date
2005-08-01 00:00:00pages
1607-13issue
8eissn
0886-3350issn
1873-4502pii
S0886-3350(05)00165-3journal_volume
31pub_type
杂志文章abstract:PURPOSE:To study the effects on visual function of glistenings and folding marks in AcrySof (Alcon) intraocular lenses (IOLs). SETTING:Department of Ophthalmology, Dokuz Eylül University, School of Medicine, Izmir, Turkey. METHODS:This study included 91 eyes that had phacoemulsification and in-the-bag AcrySof IOL imp...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(01)00995-6
更新日期:2001-10-01 00:00:00
abstract:PURPOSE:To compare the shape and volume of the lenticules of corneal tissue ablated for the correction of spherical, cylindrical, and spherocylindrical refractive errors using Boolean operations of theoretical 3-dimensional (3-D) surfaces. SETTING:Department of Ophthalmology, Rothschild Foundation, Paris, France. MET...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(02)01379-2
更新日期:2002-11-01 00:00:00
abstract:PURPOSE:To determine whether cell adhesion on an intraocular lens (IOL) in Japanese patients is affected by the optic material. SETTING:Department of Ophthalmology, Wakayama Medical University, Wakayama, Japan. DESIGN:Experimental study. METHODS:Intraocular lenses of various materials explanted from Japanese patient...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.04.001
更新日期:2011-07-01 00:00:00
abstract:PURPOSE:To compare the spatial resolution threshold in the central visual field of pseudophakic patients with monofocal and multifocal intraocular lenses (IOLs). SETTING:Eye Clinic, University of Trieste, Italy. METHODS:Twenty phakic normal subjects and four groups of 20 pseudophakic patients each, implanted with ref...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(98)80206-x
更新日期:1998-02-01 00:00:00
abstract:PURPOSE:To determine whether preoperative counseling on possible intraoperative visual perceptions during cataract surgery helps reduce the patients' fear during surgery. SETTING:Aravind Eye Hospital, Madurai, India. DESIGN:Randomized masked clinical trial. METHODS:Patients having phacoemulsification under topical a...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jcrs.2010.11.041
更新日期:2011-05-01 00:00:00
abstract::We used the finite element method to evaluate different capsulotomy techniques. Nucleus expression was simulated in a computer model to visualize stress distribution in the anterior capsule. The finite element model demonstrated that the capsulorhexis edge is strong because of low and uniform stress distribution in th...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80176-9
更新日期:1994-07-01 00:00:00
abstract::We report 3 cases of globe rupture after peribulbar anesthesia. We discuss the predisposing factors, presenting features, and visual outcome after this complication. Globe explosion is a severe complication of inadvertent intraocular injection during peribulbar anesthesia. Visual outcome after vitrectomy is generally ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(01)01034-3
更新日期:2002-03-01 00:00:00
abstract:PURPOSE:To compare the efficiencies of the operative procedures and the reductions in postoperative corneal endothelial cell density (ECD) after cataract surgery using 2 different phacoemulsification tips and their associated cassettes and tubing. SETTING:Wolfe Clinic, Marshalltown, Iowa, USA. METHODS:A randomized pr...
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(99)00201-1
更新日期:1999-10-01 00:00:00
abstract:PURPOSE:To evaluate the custom-contoured ablation pattern (C-CAP) method as a tool for providing customized laser ablations for decentered ablations based on corneal topography data. SETTING:Department of Ophthalmology, Stanford University, Stanford, California, USA. METHODS:In a prospective noncomparative interventi...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2003.12.052
更新日期:2004-08-01 00:00:00
abstract:PURPOSE:To determine the predictability and consistency of corneal flap thickness, flap diameter, and hinge length with the modern 100 microm head of the Moria LSK-One manual microkeratome. SETTING:Private clinic, office-based practice. METHODS:Forty-two consecutive eyes with no previous surgery having thin flap lase...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2004.10.056
更新日期:2005-06-01 00:00:00
abstract:PURPOSE:To evaluate the visual and economic benefits of same-day bilateral cataract surgery versus separate-day bilateral cataract surgery in the United States. SETTING:Private practice, Amarillo, Texas, USA. DESIGN:Prospective controlled nonrandomized clinical trial. METHODS:A cohort of patients having same-day bil...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2014.07.034
更新日期:2015-04-01 00:00:00
abstract::We performed morphometric analysis of the central corneal endothelium on 24 eyes of 19 patients who had had anterior radial keratotomy. The endothelium was analyzed for a variety of parameters, including cell area, perimeter, side lengths, cell shape, and number of sides. Mean, standard deviation, and coefficient of v...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(87)80068-8
更新日期:1987-05-01 00:00:00
abstract:PURPOSE:To assess the safety, efficacy, and predictability in eyes that had refractive lens exchange (RLE) with implantation of a spherical diffractive intraocular lens (IOL) after previous hyperopic laser in situ keratomileusis (LASIK). SETTING:Fernández-Vega Ophthalmological Institute, Oviedo, Spain. METHODS:This p...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.04.045
更新日期:2009-10-01 00:00:00
abstract::We developed and evaluated a method of visualizing vitreous gel in the anterior segment. In this study, 0.2 mL of injectable triamcinolone (Kenalog) 40 mg/mL was captured in a 5 microm filter and rinsed with 2 mL of balanced salt solution (BSS). It was then resuspended in 5 mL of BSS and recaptured to thoroughly remov...
journal_title:Journal of cataract and refractive surgery
pub_type: 临床试验,杂志文章
doi:10.1016/s0886-3350(03)00016-6
更新日期:2003-04-01 00:00:00
abstract::The first 45 cases of extracapsular cataract extraction, with posterior chamber intraocular lens implantation performed by ophthalmology residents at an urban county hospital were evaluated. These cases, which were performed from March 1983 to June 1984, involved a patient population that was primarily black and Hispa...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(86)80054-2
更新日期:1986-01-01 00:00:00
abstract:PURPOSE:To determine whether an intraoperative single dose of dexamethasone, diclofenac, ethylenediaminetetraacetic acid (EDTA), a combination of EDTA and RGD peptide (arginine-glycin-aspartic acid sequence), or mitomycin-C (MMC) is a pharmacological means of preventing or reducing the development of posterior capsule ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(00)00886-5
更新日期:2001-07-01 00:00:00
abstract::A series of 100 patients had cataract extraction with intraocular lens implantation by the endocapsular method of Galand. The astigmatism was assessed at two, six, and 18 weeks postoperatively. The incision and closure and the methods of correcting postoperative astigmatism are discussed. ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(89)80141-5
更新日期:1989-01-01 00:00:00
abstract:PURPOSE:To evaluate the effect of a fixed combination of brimonidine-timolol on intraocular pressure (IOP) after phacoemulsification cataract surgery. SETTING:Department of Ophthalmology, Patras University Hospital, Patras, Greece. DESIGN:Prospective randomized comparative case series. METHODS:Patients scheduled for...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jcrs.2010.08.046
更新日期:2011-02-01 00:00:00
abstract:PURPOSE:To evaluate and compare the efficacy, predictability, and safety of hyperopic laser in situ keratomileusis (H-LASIK) for the correction of consecutive hyperopia after myopic-LASIK (M-LASIK) and radial keratotomy (RK). SETTING:The Eye Institute of Utah, Salt Lake City, Utah, USA. METHODS:Seventy-seven eyes of ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(03)00051-8
更新日期:2003-05-01 00:00:00
abstract::We report a case of bacterial keratitis that occurred after implantation of intrastromal corneal ring segments (Intacs). The patient presented with decreased vision, inflammation, and stromal infiltrates localized at the extremity of an Intacs channel 3 months after surgery. Culture were positive for Clostridium perfr...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(02)01484-0
更新日期:2003-02-01 00:00:00
abstract::We describe a technique for creating a continuous curvilinear capsulorhexis (CCC) using an endoscope. Three 2.0 mm limbal incisions 120 degrees apart were made in 4 cadaver eyes. The anterior capsule was stained with trypan blue 0.1% (Vision Blue). Under endoscopic visualization, a CCC was attempted in each of the 4 g...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2003.09.051
更新日期:2004-05-01 00:00:00
abstract:PURPOSE:To monitor the change in the area of laser posterior capsulotomy over time to determine whether and when the area becomes stable. SETTING:Taipei Municipal Yang-Ming Hospital, Taipei, Taiwan, Republic of China. METHODS:This prospective study comprised 53 eyes (46 patients) with posterior capsule opacification ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(00)00645-3
更新日期:2001-04-01 00:00:00
abstract::We describe the intraoperative difficulties encountered in cases of ocular Stevens-Johnson syndrome as a result of a poor ocular surface, the presence of symblepharon, and varying degrees of corneal opacity with secondary poor visibility of anterior segment structures. Modifications to the standard phacoemulsification...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2016.09.012
更新日期:2016-11-01 00:00:00
abstract:PURPOSE:To evaluate the characteristics of higher-order aberrations (HOAs) in eyes with pellucid marginal corneal degeneration (PMCD). SETTING:Department of Ophthalmology, Osaka University Medical School, Osaka, Japan. METHODS:Ocular HOAs were measured by aberrometry in 20 eyes with PMCD (PMCD group), 76 eyes with ke...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2008.06.038
更新日期:2008-11-01 00:00:00
abstract:PURPOSE:To evaluate precision pulse capsulotomy (PPC) in simple and challenging cataract surgery cases. SETTING:Clínica Quesada, San Salvador, El Salvador. DESIGN:Prospective case series. METHODS:This single-center prospective study assessed cataract surgeries with anterior capsulotomy performed using a PPC device t...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2017.01.023
更新日期:2017-05-01 00:00:00
abstract:PURPOSE:To find the incidence, contributing factors, outcomes, and clinical impact of intraoperative posterior capsule striae. SETTING:Iladevi Cataract & IOL Research Centre, Ahmedabad, India. METHODS:In a prospective study, 100 consecutive eyes had phacoemulsification and intraocular lens (IOL) (AcrySof MA30BA) impl...
journal_title:Journal of cataract and refractive surgery
pub_type: 临床试验,杂志文章
doi:10.1016/s0886-3350(99)00197-2
更新日期:1999-11-01 00:00:00
abstract:PURPOSE:To compare the analgesic effects of different doses of sub-Tenon's anesthesia in cataract surgery by assessing patient response to visceral stimulus. SETTING:Inouye Eye Hospital, Tokyo, Japan. METHODS:A prospective study was done of 1019 eyes of 1019 patients having phacoemulsification and posterior chamber i...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00149-2
更新日期:1999-09-01 00:00:00
abstract:PURPOSE:To evaluate survival and the risk for mortality after cataract surgery in relation to individual-level and socioeconomic factors in Scotland over 3 decades. SETTING:Linked healthcare data, United Kingdom. DESIGN:Representative population-based study. METHODS:A 5% random sample of Scottish decedents linked to...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2017.01.018
更新日期:2017-04-01 00:00:00
abstract::We report 2 intraocular lenses (IOLs) manufactured from the same hydrophilic acrylic polymer by Ioltech that developed optic opacification. In both cases, the postoperative course after implantation of the IOLs was complicated by significant inflammatory reaction with fibrin formation in the anterior chamber. Patholog...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2006.01.076
更新日期:2006-05-01 00:00:00
abstract:PURPOSE:To present clinical findings of a cluster of cases of toxic anterior segment syndrome (TASS) after uneventful phacoemulsification cataract surgery. SETTING:Department of Ophthalmology, Akdeniz University, Antalya, Turkey. METHODS:Six eyes of 6 patients developed TASS after uneventful phacoemulsification catar...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2006.05.008
更新日期:2006-10-01 00:00:00