Abstract：
PURPOSE:To assess the refractive accuracy of different formulas for intraocular lens (IOL) power calculation in eyes with keratoconus. SETTING:IRCCS Fondazione Bietti, Rome, Italy. DESIGN:Multicenter retrospective interventional study. METHODS:A consecutive series of eyes with keratoconus that had cataract surgery were evaluated. Keratometry, anterior chamber depth, and axial length were measured preoperatively with optical biometry; IOL power was calculated with the Barrett Universal II, Haigis, Hoffer Q, Holladay 1, and SRK/T formulas. Subjective refraction was assessed at 1 month. The mean prediction error (PE), median absolute error (MedAE) and percentage of eyes with a PE within ±0.50 diopters (D), ±0.75 D, and ±1.00 D were calculated. RESULTS:The final spherical equivalent was -0.52 D ±1.61 (SD). In the whole sample (41 eyes), the mean PE was positive (hyperopic surprise) with all formulas; the lowest PE (0.91 D) and MedAE (0.62 D) were obtained with the SRK/T formula. In stage I eyes (n = 21), the MedAE ranged between 0.43 and 0.91 D; the SRK/T formula achieved the lowest MedAE and the highest rate of eyes with a PE within ±0.50 (61.9%). In stage II eyes (n = 13), the MedAE ranged between 0.75 D and 1.50 D; the SRK/T formula achieved the lowest MedAE and the highest rate of eyes with a PE within ±0.50 (30.8%). In stage III eyes (n = 7), the MedAE was higher than 2.50 D with all formulas. CONCLUSIONS:In keratoconus eyes, all formulas led to a hyperopic refractive outcome. The SRK/T was the most accurate formula. The results were worse in advanced stages of the disease.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Savini G,Abbate R,Hoffer KJ,Mularoni A,Imburgia A,Avoni L,D'Eliseo D,Schiano-Lomoriello Ddoi
10.1016/j.jcrs.2018.11.029subject
Has Abstractpub_date
2019-05-01 00:00:00pages
576-581issue
5eissn
0886-3350issn
1873-4502pii
S0886-3350(18)30968-4journal_volume
45pub_type
杂志文章,多中心研究abstract：PURPOSE:To compare the efficacy of low- and high-molecular-weight sodium hyaluronate in protecting corneal endothelial cells during phacoemulsification. SETTING:Miyata Eye Hospital, Miyakonojo, Miyazaki, Japan. METHODS:One hundred forty-nine eyes of 136 cataract patients were randomly assigned to have cataract surger...
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(02)01540-7
更新日期：2002-09-01 00:00:00
abstract：PURPOSE:To analyze the repeatability of corneal astigmatism measurements with 2 autokeratometers (IOLMaster 500 and Lenstar LS 900), 2 Placido topographers (Keratron Scout and Atlas 9000), and a Scheimpflug tomographer (Pentacam HR). SETTING:Department of Ophthalmology, Goethe University, Frankfurt, Germany. DESIGN:P...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.11.046
更新日期：2016-04-01 00:00:00
abstract：PURPOSE:To evaluate functional vision and quality-of-life outcomes after bilateral wavefront-guided laser in situ keratomileusis (LASIK). SETTING:Byers Eye Institute, Stanford University School of Medicine, Palo Alto, California, USA. DESIGN:Prospective case series. METHODS:Visual acuity, refractive error, and aberr...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2018.12.013
更新日期：2019-06-01 00:00:00
abstract：PURPOSE:To investigate preoperative and postoperative prophylactic treatment with different pharmacological agents before flap cutting and exposure to a diffuse lamellar keratitis (DLK) causative agent. SETTING:Magill Research Center for Vision Correction, Storm Eye Institute, Medical University of South Carolina, Cha...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/S0886-3350(03)00327-4
更新日期：2004-01-01 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 evaluate the thickness and side-cut angle of laser in situ keratomileusis (LASIK) flaps created by 1 of 3 femtosecond lasers or a microkeratome using Fourier-domain optical coherence tomography (OCT). SETTING:Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, S...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2010.08.042
更新日期：2011-02-01 00:00:00
abstract：PURPOSE:To evaluate the role of intravitreal bevacizumab, an anti-vascular endothelial growth factor agent, injected at the time of cataract surgery on the postoperative progression of diabetic retinopathy (DR) and diabetic maculopathy. SETTING:Tertiary-care eye specialty hospital, Dhahran, Kingdom of Saudi Arabia. M...
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.2008.09.019
更新日期：2009-01-01 00:00:00
abstract：:A 77-year-old woman had uneventful phacoemulsification. Postoperative examination revealed that chloramphenicol ointment instilled in the conjunctival fornix had entered the anterior chamber and smeared the intraocular lens (IOL). Immediate surgical removal of the ointment with IOL exchange was performed. The eye sett...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(02)01503-1
更新日期：2003-03-01 00:00:00
abstract：:We describe a method in which constant infusion inflow through an anterior chamber maintainer (ACM) is used to maintain positive intraocular pressure (IOP) during cataract extraction through a self-sealing tunnel incision. A retrospective review of patient records showed that the difference in the incidence of intraop...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(97)80202-7
更新日期：1997-05-01 00:00:00
abstract：:Phaco slice and separate retains the advantages of the chopping techniques of Nagahara, Koch, and Fukasaku but replaces chopping or snapping with slicing across the center of the phaco-tip-stabilized nucleus using a Nagahara chopper and then repositioning the chopper to optimally separate the divided lens halves. As t...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)80042-x
更新日期：1999-04-01 00:00:00
abstract：:In studies conducted by numerous investigators for 150 years, lenses regenerated following endocapsular lens extraction in New Zealand albino rabbits have been irregular in shape, appearing primarily doughnut-shaped as a result of lack of lens growth at the site of the anterior capsulotomy and its adhesion to the post...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80343-4
更新日期：1993-11-01 00:00:00
abstract：PURPOSE:To evaluate the influence of a capsular bending ring (CBR) or tension ring (CTR) on capsular bag shrinkage. SETTING:Department of Ophthalmology, Johannes Gutenberg-University, and Department of Medical Biometry, Epidemiology and Informatics, University of Mainz, Mainz, Germany. METHODS:In 92 eyes of 92 patien...
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.2005.06.046
更新日期：2005-10-01 00:00:00
abstract：:A randomized prospective trial compared keratometric and visual outcomes for 196 patients receiving 3.2 mm, 5.0 mm, or 6.0 mm incisions for cataract removal and intraocular lens implantation. There were no statistically significant differences among the groups preoperatively or at one to two days or three to six month...
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(13)80402-6
更新日期：1993-01-01 00:00:00
abstract：PURPOSE:To measure the rheological behaviour of artificial tears to gain insight into the potential role of rheology in predicting the efficacy of artificial tear solutions for the treatment of dry eye disease (DED). SETTING:Research laboratories of I-MED Pharma, Canada, Rohn and Associates, Inc., New Jersey, and Hyda...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000507
更新日期：2020-11-30 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：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...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.01.013
更新日期：2005-08-01 00:00:00
abstract：PURPOSE:To evaluate the performance of the microincision Acri. Smart 46S intraocular lens (IOL) (Acri.Tec) in pediatric cataract surgery. SETTING:Department of Ophthalmology, Ludwig-Maximilians University, Munich, Germany. METHODS:Thirty-two consecutive eyes of 22 children who had cataract surgery with planned IOL im...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.11.032
更新日期：2008-04-01 00:00:00
abstract：UNLABELLED:We present a technique that uses a near-point string to demonstrate the anticipated near point of multifocal and accommodating intraocular lenses (IOLs). Beads are placed on the string at distances corresponding to the near points for diffractive and accommodating IOLs. The string is held up to the patient's...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2016.04.003
更新日期：2016-05-01 00:00:00
abstract：:A 76-year-old woman had sudden visual loss 9 years after an extracapsular cataract extraction with implantation of a poly(methyl methacrylate) disc intraocular lens (IOL) in the capsular bag. Slitlamp examination showed the disc IOL had luxated into the vitreous through a linear inferior opening in the capsular bag; t...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)80142-4
更新日期：1999-02-01 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：:Seven patients with unsuspected unilateral axial myopia developed a cataract in the longer eye. Vision deteriorated in all cases between the ages of 40 and 55 years. Bilateral axial length measurements were necessary for the diagnosis and revealed a difference of 4.5 mm to 6.7 mm between the two eyes. Five cases had a...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(89)80090-2
更新日期：1989-05-01 00:00:00
abstract：PURPOSE:To assess the incidence and possible causative factors of a newly recognized syndrome, the intraoperative floppy iris (IFIS). SETTING:Clinical practices in Los Altos and San Rafael, California, USA. METHODS:A retrospective chart review of consecutive cataract surgeries performed in a 2-surgeon practice over a...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.02.027
更新日期：2005-04-01 00:00:00
abstract：:We present 4 cases of anterior capsule contraction syndrome in which progressive shrinkage of the anterior capsulorhexis developed after uneventful phacoemulsification. Three eyes were pseudophakic, and 1 eye remained aphakic. The newly formed membrane was surgically peeled from the anterior capsule, restoring the cap...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2003.08.034
更新日期：2004-04-01 00:00:00
abstract：:Safe, effective administration of local anesthesia prior to ocular surgery is a primary concern of ophthalmologists and variations in the technique and method of delivering anesthesia have been developed. Retrobulbar anesthesia, although considered safe and effective, can have serious complications. Using periocular a...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80861-9
更新日期：1991-07-01 00:00:00
abstract：PURPOSE:To assess the ability of corneal power measurements by a rotating Scheimpflug camera to measure the refractive change induced by myopic excimer laser surgery. SETTING:G.B. Bietti Foundation-IRCCS, Rome, Italy. DESIGN:Evaluation of diagnostic test. METHODS:The following corneal power measurements by the Penta...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2012.12.031
更新日期：2013-04-01 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 find the conditions that prevent posterior capsule opacification through in vitro analysis of the relationship between intraocular lens (IOL) optic configuration and lens epithelial cell (LEC) migration. SETTING:Division of Morphogenesis, Department of Developmental Biology, National Institute for Basic Bio...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(97)80245-3
更新日期：1997-07-01 00:00:00
abstract：:Recently, scleral fixation has been used in posterior chamber intraocular lens implantation in the absence of the posterior capsule. Fixation is achieved with a suture through the ciliary sulcus and sclera at a horizontal or vertical position. To achieve good functional results, the optical portion of the lens must li...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80585-8
更新日期：1994-05-01 00:00:00
abstract：:An alternative technique to manage pediatric cataracts comprises a pars plana lensectomy and anterior vitrectomy with anterior and posterior capsulotomies and posterior chamber heparin-surface-modified intraocular lens (IOL) implantation in the ciliary sulcus through a scleral tunnel. The surgical results in 7 eyes of...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(00)00298-4
更新日期：2000-04-01 00:00:00
abstract：:The ergonomics of ocular surgery has received little attention even though the usual positioning of the patient and surgeon during traditional cataract surgery places the surgeon at risk for back, neck, and arm strain. The recent development of the temporal cataract incision allows the operating microscope to be tilte...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)80122-9
更新日期：1999-02-01 00:00:00
