Abstract:
PURPOSE:To evaluate the actual versus the expected thickness of laser in situ keratomileusis (LASIK) flaps and to determine the factors that affect flap thickness. SETTING:Centre For Sight, Queen Victoria Hospital, East Grinstead, United Kingdom. METHODS:A retrospective analysis of LASIK procedures in 757 consecutive eyes was done. The surgery was performed by a single surgeon using 2 Hansatome microkeratomes (Bausch & Lomb) with 160 microm and 180 microm heads. Patient age, preoperative manifest refraction, automated keratometry, preoperative central pachymetry, and intraoperative stromal pachymetry were evaluated to determine whether they influenced the actual flap thickness. RESULTS:Bilateral LASIK was performed in 343 patients (686 eyes). The 160 microm head was used in 641 eyes (84.6%) (Group 1) and the 180 microm head, in 116 eyes (15.4%) (Group 2). The mean preoperative manifest refraction spherical equivalent (SE) was -3.9 diopters (D) +/- 4.5 (SD) (range +7.4 to -25.0 D) in Group 1 and -4.4 +/- 3.7 D (range +7.1 to -12.9 D) in Group 2. The mean preoperative keratometry reading was 43.6 +/- 1.8 D (range 36.0 to 48.6 D) and 43.6 +/- 1.8 D (range 35.9 to 47.0 D), respectively; the mean preoperative central pachymetry was 543 +/- 35 microm (range 447 to 643 microm) and 548 +/- 31 microm (range 453 to 613 microm), respectively; and the mean flap thickness was 116.4 +/- 19.8 microm and 117.3 +/- 18.0 microm, respectively. The difference between the actual and the expected flap thickness in each group was statistically significant (P<.001). There was no significant difference in the actual flap thickness between the 2 Hansatomes. The preoperative SE and central pachymetry were the only factors that influenced the actual flap thickness (P<.05); thin flaps were more common with increasing myopia and increasing corneal thickness. CONCLUSIONS:Spherical equivalent and preoperative pachymetry were the principal factors that influenced flap thickness. Preoperative keratometry values and patient age did not influence the actual flap thickness.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Giledi O,Mulhern MG,Espinosa M,Kerr A,Daya SMdoi
10.1016/j.jcrs.2003.09.070subject
Has Abstractpub_date
2004-05-01 00:00:00pages
1031-7issue
5eissn
0886-3350issn
1873-4502pii
S0886335004002901journal_volume
30pub_type
杂志文章abstract::The results of implanting 269 3M multifocal intraocular lenses are analyzed and compared with those of monofocal lenses. Visual acuity results were excellent. In the best case group, 98% of eyes obtained a distance visual acuity of 20/40 or better and 96% of best cases obtained a functional reading capacity without su...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)81044-9
更新日期:1991-09-01 00:00:00
abstract::Implantation of ultraviolet (UV) light-absorbing intraocular lenses and the manufacturers developing these lenses has significantly increased over the past few years. In this paper, the need for filtration of UV light by intraocular lens implants is briefly examined and various new product development aspects of a UV-...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(86)80011-6
更新日期:1986-05-01 00:00:00
abstract::We developed a formula to measure the posterior curvature of the cornea. In our study, real corneal power in 51 eyes was calculated by using anterior and posterior curvatures and corneal thickness. The corneal refractive index was found to be a variable value between 1.3243 and 1.3339 (mean 1.3304 +/- 0.0003). ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80151-4
更新日期:1994-03-01 00:00:00
abstract:PURPOSE:To analyze the effect of asphericity of intraocular lenses (IOLs) on vertical coma aberration after implantation of spherical, spherically neutral, and aspheric IOLs. SETTING:Department of Ophthalmology, St. Thomas' Hospital, London, United Kingdom. METHOD:This observational study recruited patients from prev...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.08.024
更新日期:2010-02-01 00:00:00
abstract:PURPOSE:To validate changes in intraocular pressure (IOP) after phacoemulsification with intraocular lens (IOL) implantation without pressure-lowering surgery in previously unoperated eyes of normal and glaucoma patients. SETTING:University Eye Clinic, Otto-von-Guericke-University, Magdeburg, Germany. DESIGN:Cohort s...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.11.034
更新日期:2012-04-01 00:00:00
abstract:PURPOSE:To evaluate factors that predict the visual prognosis after cataract surgery in patients with Behçet disease. SETTING:The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. DESIGN:Retrospective clinical study. METHODS:Patients with Behçet disease and complicated cataract had phacoem...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2012.04.027
更新日期:2012-08-01 00:00:00
abstract:PURPOSE:To compare short-term refractive and visual acuity outcomes after topography-guided laser in situ keratomileusis (LASIK) planned with a new topography analysis system to those based on the manifest refraction. SETTING:Four clinical sites in the United States. DESIGN:Double-arm, nonmasked, nonrandomized retros...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1097/j.jcrs.0000000000000176
更新日期:2020-06-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy and safety of an ab externo suture retrieval and scleral fixation technique in the treatment of subluxated posterior chamber intraocular lenses (PC IOLs). SETTING:Academic tertiary care centers. METHODS:Surgical databases from 2 surgeons were reviewed for consecutive cases from March ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2005.06.050
更新日期:2006-01-01 00:00:00
abstract:PURPOSE:To evaluate dissatisfied patients and those with subjectively worse visual ability after cataract surgery and to analyze how these factors relate to poor visual acuity results (worse than 20/40). SETTING:Department of Ophthalmology, Norrlands University Hospital, Umeå, Sweden. METHODS:A prospective, populatio...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00135-2
更新日期:1999-08-01 00:00:00
abstract:PURPOSE:To evaluate changes in anterior chamber depth (ACD) and intraocular pressure (IOP) after phacoemulsification in eyes with occludable angles and compare the results with those in eyes with normal open angles. SETTING:Eye Clinic, Ipoh General Hospital, Ipoh, Perak, Malaysia. METHODS:Patients with nonglaucomatou...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2010.02.024
更新日期:2010-08-01 00:00:00
abstract:PURPOSE:To evaluate the clinical outcomes of implantation of Ferrara intrastromal corneal ring segments (ICRS) in patients with astigmatism after penetrating keratoplasty (PKP). SETTING:Private clinic, Belo Horizonte, Brazil. DESIGN:Retrospective consecutive case series. METHODS:Chart records of post-PKP patients wh...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.12.037
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:To analyze the transparent liquid between the posterior lens capsule and the posterior chamber intraocular lens (PC IOL) in early postoperative capsular block syndrome and discuss the mechanism of posterior capsule distention. SETTING:Department of Ophthalmology, Tokyo University School of Medicine, and Tokyo ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00430-7
更新日期:2000-03-01 00:00:00
abstract:PURPOSE:To delineate the learning curve for a beginning refractive surgeon using the centrifugal (American) technique. SETTING:Naval Medical Center, San Diego, California, USA. METHODS:The first 100 radial keratotomy (RK) cases (51 patients) of one surgeon, divided into five sequential groups of 20, were retrospectiv...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(98)80286-1
更新日期:1998-04-01 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::One hundred and thirty-three eyes of 103 patients had photorefractive keratectomy with a slit scan mode excimer laser for myopia ranging from -6.00 to -22.00 diopters (D). The epithelium was removed with 20% ethanol, and the ablation was done with a tapered profile surrounding the optical zone. Patients were divided i...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80526-3
更新日期:1995-07-01 00:00:00
abstract:UNLABELLED:We describe several simple modifications of the big-bubble technique to improve surgeon comfort and reduce the risk for complications, with emphasis on our ophthalmic viscosurgical device (OVD)-assisted incision technique. By coating the overlying stroma with OVD prior to entering the big bubble, space is ma...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.09.014
更新日期:2011-11-01 00:00:00
abstract:PURPOSE:To compare the pharmacotherapeutic practices of high-volume photorefractive keratectomy (PRK) surgeons with suggested practices gleaned from the current literature. SETTING:York Finch Eye Associates, Toronto, Canada. METHODS:Seventy-five ophthalmic surgeons believed by the authors to do a high-volume of PRKs ...
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(96)80116-7
更新日期:1996-10-01 00:00:00
abstract:PURPOSE:To determine whether sutureless small incision cataract surgery reduces induced astigmatism over the long term. SETTING:University Eye Hospital, Vienna, Austria. METHODS:In a prospective study, we investigated surgically induced astigmatism in 63 cases of no-stitch, small incision cataract surgery with a 4.0 ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(97)80180-0
更新日期:1997-04-01 00:00:00
abstract:PURPOSE:To retrospectively evaluate the incidence of neodymium: YAG (Nd:YAG) laser capsulotomies for posterior capsule opacification (PCO) in eyes receiving one of two types of capsular-bag-fixated silicone posterior chamber intraocular lenses (IOLs) over 7 years. SETTING:John Moran Eye Center, University of Utah, Sal...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(96)80088-5
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:To compare the refractive outcome after photorefractive keratectomy (PRK) in keratoconus-suspect patients with that in patients with normal corneal topography. SETTING:Gimbel Eye Centre, Calgary, Alberta, Canada. METHOD:In a retrospective study, 3 patients (5 eyes) with unusually shaped corneal topography bef...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00234-5
更新日期:1999-11-01 00:00:00
abstract:PURPOSE:To review the visual outcomes and complications after intraocular lens (IOL) implantation in children with traumatic cataract in sub-Saharan Africa, where contact lenses for unilateral aphakia are impractical in most patients. SETTING:PCEA Kikuyu Eye Unit, Nairobi, Kenya, East Africa. METHODS:All children you...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(01)00823-9
更新日期:2001-12-01 00:00:00
abstract::From the beginning of nuclear fragment removal to the end, we progressively reduce all the parameters, ie, energy, vacuum, and aspiration flow rate, in a step-by-step manner proportionate to the posterior capsule exposure. This promotes adaptation of various parameters to the appropriate stages of surgery and allows t...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(03)00121-4
更新日期:2003-06-01 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 assess the safety and effectiveness of an immunotoxin, MDX-RA, designed to inhibit posterior capsule opacification (PCO). SETTING:Eleven private practices in the United States. METHODS:This study comprised 63 eyes of 63 patients having extracapsular cataract extraction by phacoemulsification; these patient...
journal_title:Journal of cataract and refractive surgery
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0886-3350(98)80352-0
更新日期:1998-12-01 00:00:00
abstract:PURPOSE:To investigate the effect of distilled deionized water (DDW) on lens epithelial cells (LECs) attached to the lens capsule. SETTING:Wound Healing Research Laboratory, Center for Vision Research, Westmead Hospital, Sydney, NSW, Australia. METHODS:Anterior capsulotomy specimens taken during routine cataract surg...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2004.01.028
更新日期:2004-05-01 00:00:00
abstract::A capsulorhexis may be difficult to perform in the absence of a red fundus reflex. Using 0.1 mL of trypan blue 0.1% to stain the anterior capsule in 30 patients with a mature cataract enabled us to visualize the capsulorhexis during phacoemulsification. No adverse reactions were observed up to 12 months after surgery....
journal_title:Journal of cataract and refractive surgery
pub_type: 临床试验,杂志文章
doi:10.1016/s0886-3350(99)80004-2
更新日期:1999-01-01 00:00:00
abstract:PURPOSE:To assess whether laser in situ keratomileusis (LASIK) assisted by corneal topography can successfully treat corneal irregularities or irregular astigmatism in patients with previous ocular surgery or ocular trauma. SETTING:University Eye Hospital, Klinikum Mannheim, Mannheim, Germany. METHODS:In a prospectiv...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(98)80196-x
更新日期:1998-02-01 00:00:00
abstract:PURPOSE:To evaluate the repeatability of the Galilei dual-Scheimpflug analyzer in measuring corneal curvature, wavefront aberrations, pachymetry, and anterior chamber depth (ACD). SETTING:Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA. METHODS:Three consecutive measurements were performed in 1 ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.09.034
更新日期:2010-03-01 00:00:00
abstract::We report the case of a 12-year-old boy with severe keratoconus who had uneventful deep anterior lamellar keratoplasty (DALK) using the big-bubble technique in the left eye for severe loss of best spectacle-corrected visual acuity and contact lens intolerance. Two weeks after surgery, the patient experienced accidenta...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.01.037
更新日期:2009-06-01 00:00:00
abstract:PURPOSE:To compare the outcomes of implantation of 2 models of intrastromal corneal ring segments (ICRS) to manage keratoconus. SETTING:Kartal Training and Research Hospital, Istanbul, Turkey. METHODS:This study evaluated eyes with keratoconus that had implantation of Keraring ICRS (Group A) or Intacs ICRS (Group B)....
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.12.031
更新日期:2010-06-01 00:00:00