Abstract:
PURPOSE:To evaluate an algorithm for corneal power estimation in intraocular lens (IOL) power calculation after myopic laser refractive surgery using direct corneal measurements. SETTING:International Vision Correction Research Centre, University of Heidelberg, Heidelberg, Germany. METHODS:Corneal parameters in normal eyes and eyes of refractive surgery cases were evaluated by rotating Scheimpflug imaging. Corneal optical power (K(optical)) calculated by a Gaussian optics formula was simplified as K(optical) = K(anterior) + K(2) (K(anterior) = anterior corneal power; K(posterior) = posterior corneal power; K(2) = K(posterior)--K(anterior) x K(posterior) x corneal thickness/1.376). The variation and change in K(2) induced by refractive surgery were analyzed. A corrective algorithm to calculate K(optical) using mean K(2) (-6.10 diopters [D]), K(corrective) = 1.114 x measured K - 6.10, was derived based on statistical analysis, which was in accordance with the modified Maloney method. The IOL power after refractive surgery was calculated using K(corrective). RESULTS:The mean K(2) of normal and post-refractive corneas was -6.10 +/- 0.23 D and -6.16 +/- 0.17 D, respectively (P = .17). The mean refractive surgery-induced change in K(2) was -0.06 +/- 0.10 D. The variations in K(2) were small (95% confident interval, -6.55 to -5.65 [normal cornea]; -6.48 to -5.70 [pre-refractive]; - 6.49 to -5.83 [post-refractive)]. Using K(corrective) for IOL power calculation in post-refractive cases yielded mean absolute prediction errors of 0.58 +/- 0.52 D (Haigis), 0.59 +/- 0.49 D (double-K Hoffer Q), and 0.58 +/- 0.47 D (double-K SRK/T). CONCLUSION:The algorithm that induced low error in corneal power estimation was relatively reliable in IOL calculation after myopic laser refractive surgery. FINANCIAL DISCLOSURE:No author has a financial or proprietary interest in any material or method mentioned.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Jin H,Holzer MP,Rabsilber T,Borkenstein AF,Limberger IJ,Guo H,Auffarth GUdoi
10.1016/j.jcrs.2009.07.011subject
Has Abstractpub_date
2010-01-01 00:00:00pages
87-96issue
1eissn
0886-3350issn
1873-4502pii
S0886-3350(09)00827-Xjournal_volume
36pub_type
杂志文章abstract:PURPOSE:To compare 2-year neodymium:YAG (Nd:YAG) laser capsulotomy rates after bilateral implantation of hydrophobic or hydrophilic multifocal intraocular lenses (IOLs). SETTING:Private practice, southwest France. METHODS:This retrospective study included patients with cataract or clear lenses who had bilateral impla...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2010.01.027
更新日期:2010-07-01 00:00:00
abstract:PURPOSE:To investigate the penetration of topically applied levofloxacin 0.5% and ofloxacin 0.3% eyedrops into the aqueous humor of patients having cataract surgery. SETTING:Hochkreuzklinik Eye Hospital, Bonn, Germany. METHODS:In this randomized, investigator-masked study, 69 patients received 4 drops of either levof...
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/j.jcrs.2004.12.063
更新日期:2005-07-01 00:00:00
abstract:PURPOSE:To compare the variance in manifest refraction spherical equivalent (MRSE) after photorefractive keratectomy (PRK) with mitomycin-C (MMC), PRK without MMC, and laser in situ keratomileusis (LASIK) for the treatment of myopic astigmatism. SETTING:Jules Stein Eye Institute, University of California, Los Angeles,...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2014.02.048
更新日期:2014-12-01 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:PURPOSE:To test the performance of 4 tonometers in estimating intraocular pressure (IOP) after 3 forms of refractive surgery. SETTING:Eye Hospital, Wenzhou Medical University, China. DESIGN:Prospective case series. METHODS:Patients matched for preoperative age, corneal thickness, and myopic correction enrolled for f...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1097/j.jcrs.0000000000000204
更新日期:2020-07-01 00:00:00
abstract::Interlenticular opacification (ILO) developed 7 months after secondary acrylic piggyback lens implantation in which the anterior lens was placed in the bag. This resulted in glare and a hyperopic shift. Treating the ILO with the neodymium:YAG laser successfully reduced the glare and corrected the hyperopic shift. ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(01)00865-3
更新日期:2001-09-01 00:00:00
abstract::To describe the successful treatment of epithelial ingrowth using combined surgical excision with intracameral adjuvant 5-fluorouracil (5-FU) followed by Descemet-stripping automated endothelial keratoplasty (DSAEK). A 71-year-old man presented with epithelial ingrowth after clear corneal phacoemulsification. He under...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2018.12.030
更新日期:2019-05-01 00:00:00
abstract:PURPOSE:To evaluate visual quality after laser in situ keratomileusis (LASIK) performed to achieve monovision in presbyopic patients. SETTING:Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, Granada, and Clínica Novovisión, Madrid, Spain. DESIGN:Cohort study. METHODS:Laser...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.03.042
更新日期:2011-09-01 00:00:00
abstract::Anterior segment optical coherence tomography is a new method to explore the anterior chamber. The target can be focused and defocused with positive or negative lenses to reproduce the conditions of natural accommodation. We studied accommodation in an albino patient because the absence of pigment allows the infrared ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2003.12.043
更新日期:2004-03-01 00:00:00
abstract:PURPOSE:To validate clinically in a normal healthy population an algorithm to correct the error in the keratometric estimation of corneal power based on the use of a variable keratometric index of refraction (n(k)). SETTING:Medimar International Hospital (Oftalmar) and University of Alicante, Alicante, Spain. DESIGN:...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2012.03.026
更新日期:2012-08-01 00:00:00
abstract:PURPOSE:To compare changes in intraocular pressure (IOP) during femtosecond laser pretreatment of cataract between glaucomatous eyes and nonglaucomatous eyes. SETTING:Launceston Eye Institute and Launceston Eye Hospital, Launceston, Australia. DESIGN:Nonrandomized interventional prospective case series. METHODS:Pati...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2014.10.026
更新日期:2015-02-01 00:00:00
abstract:UNLABELLED:We report a 66-year-old patient who presented with increasing hyperopia, astigmatism, and presbyopia in both eyes 8 years after bilateral laser in situ keratomileusis (LASIK) and LASIK enhancement in the left eye aiming for spectacle independence. Bilateral multifocal toric Lentis Mplus intraocular lenses (I...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2012.08.042
更新日期:2012-11-01 00:00:00
abstract::Anterior stromal pocket hydration was compared with conventional hydration for preventing wound leak after 2.8 mm uniplanar clear corneal incisions (CCIs) in patients having routine cataract surgery. Conventional hydration involves hydration of the lateral walls of the main incision with visible whitening of the strom...
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.2012.04.019
更新日期:2012-06-01 00:00:00
abstract:PURPOSE:To measure the effect of spherical intraocular lens (IOL) implantation and conventional myopic laser in situ keratomileusis (LASIK) on peripheral ocular aberrations. SETTING:Visual and Ophthalmic Optics Laboratory, School of Optometry, and Institute of Health and Biomedical Innovation, Queensland University of...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2010.01.018
更新日期:2010-07-01 00:00:00
abstract:PURPOSE:To assess the pain experienced by patients with small pupils during pupil stretching in phacoemulsification performed using topical anesthesia. SETTING:Royal Victoria Eye & Ear Hospital and Mater Misericordiae University Hospital, Dublin, Ireland. METHODS:This was a prospective study that included 26 eyes wit...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2005.02.044
更新日期:2005-09-01 00:00:00
abstract::We describe a technique for making an optimal flange in intraocular lenses (IOLs) used for flanged intrascleral IOL fixation. The flange shape varies in poly(methyl methacrylate) (PMMA) haptics of different IOLs of different manufacturers. We identified the distance between the forceps grip of the haptic and the end o...
journal_title:Journal of cataract and refractive surgery
pub_type: 评论,杂志文章
doi:10.1016/j.jcrs.2018.07.042
更新日期:2018-11-01 00:00:00
abstract:PURPOSE:To determine whether the yellow filters often used for glare reduction influence retinal straylight measured in healthy eyes. SETTING:Department of Ophthalmology, Antwerp University Hospital, Edegem, Belgium. DESIGN:Prospective case series. METHODS:For each eye, the spherical equivalent (SE) was determined u...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2017.06.033
更新日期:2017-08-01 00:00:00
abstract:PURPOSE:To assess visual acuity tolerance to defocus caused by residual refractive errors after clear lens extraction (CLE) with apodized diffractive intraocular lens (IOL) implantation. SETTING:Fernández-Vega Ophthalmological Institute, Oviedo, Spain. METHODS:In this prospective study, 150 eyes of 75 consecutive pat...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2007.10.020
更新日期:2008-02-01 00:00:00
abstract:PURPOSE:To evaluate intrastromal concentrations of riboflavin with and without epithelium to ensure the efficacy and safety of corneal crosslinking (CXL) by the standard and transepithelial procedures. SETTING:Department of Ophthalmology and Department of Pharmacology G. Segre, Siena University, Siena, Italy. METHODS...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2009.01.009
更新日期:2009-05-01 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::Long-term stability of intrastromal corneal ring segments is important in maintaining patients' corrected distance visual acuity and avoiding injury to the local tissues. We report a case of traumatic shattering of intrastromal segments due to blunt trauma, with successful removal of the fragments. ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2010.03.022
更新日期:2010-06-01 00:00:00
abstract::A patient with bilateral Salzmann's nodular degeneration developed a myopic shift of 9 diopters in the right eye and 5 diopters in the left eye after removal of his nodules. This previously unreported complication of removal of peripheral corneal pathology is discussed in light of our current understanding of keratore...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80658-x
更新日期:1994-11-01 00:00:00
abstract::Measurement of laser in situ keratomileusis flap thickness is required to estimate residual bed thickness. Historically, flap thickness has been assumed, estimated based on microkeratome head labeling, guessed based on flap handling characteristics, or calculated by subtraction pachymetry. We describe a method for mea...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2006.01.003
更新日期:2006-04-01 00:00:00
abstract::We analyzed an enucleated eye that was blind and painful from a 66-year-old patient implanted with a Tennant modification of the Choyce Mark VIII anterior chamber intraocular lens (IOL) as a secondary procedure in 1978. The eye developed glaucoma, with implantation of an Ahmed valve in 2006. Gross and light microscopi...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2011.10.023
更新日期:2012-02-01 00:00:00
abstract::Oscillopsia associated with near fixation after multifocal intraocular lens (IOL) implantation has not been fully recognized. A 46-year-old woman presented with shaking of vision in both eyes during near fixation after uneventful implantation of a single-piece multifocal posterior chamber IOL in both eyes. There was n...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1097/j.jcrs.0000000000000360
更新日期:2020-12-01 00:00:00
abstract:PURPOSE:To evaluate a poly(methyl methacrylate) refractive, zonal-progressive multifocal intraocular lens (IOL) in patients requiring cataract surgery. SETTING:Department of Ophthalmology, Saiseikai Kurihashi Hospital, Saitama, Japan. METHODS:This open-label noncomparative study evaluated 58 eyes of 31 Japanese patie...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00408-3
更新日期:2000-07-01 00:00:00
abstract:PURPOSE:To determine whether frozen cultured sheets of human allogeneic epidermal keratinocytes (CEAK) improved wound repair after experimental corneal ablation by photorefractive keratectomy (PRK). SETTING:Hospital "Luis Sanchez Bulnes" de la Asociación para Evitar la Ceguera en Mexico, I.A.P, and Department of Cell ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(01)01349-9
更新日期:2002-09-01 00:00:00
abstract::We report the case of a 54-year-old man who attended our emergency department complaining of severe floaters and decreased vision in his right eye. Seven days earlier, a dexamethasone intravitreal implant (Oxurdex) had been placed for a noninfectious posterior uveitis. Slitlamp examination showed the implant had penet...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2013.06.003
更新日期:2013-08-01 00:00:00
abstract::The effect of freezing on the growth of rat lens epithelial cells was studied in vitro. We found that 80% of the lens epithelial cells died after freezing at -45 degrees C for two hours and that the surviving cells could grow with the addition of growth factors or when placed on a sheet of type 4 collagen, but not whe...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(88)80122-6
更新日期:1988-05-01 00:00:00
abstract::Carbachol instilled in 125 eyes at the time of extracapsular cataract extraction and posterior chamber lens insertion had a statistically significant effect on lowering the postoperative intraocular pressure (IOP) at 24 hours (average IOP 14.0 mm Hg) and at 72 hours (average IOP 11.6 mm Hg) (P less than .001). The per...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(88)80034-8
更新日期:1988-11-01 00:00:00