Abstract：
PURPOSE:To evaluate the Nidek handheld automated keratometer and compare it with the manual Zeiss keratometer. SETTING:St. Paul's Eye Unit, Royal Liverpool University Hospital, Liverpool, United Kingdom. METHODS:Forty-five normal adult volunteers were included in the study. Three sets of randomized keratometry measurements were taken from both eyes of each adult, with both instruments by two independent observers. Readings included powers of the steep and flat meridians and axis of the flat meridian. The mean difference between the two instruments was calculated. The variance of each instrument was calculated for the axis, the steep and flat meridians, and the mean of the two meridians. RESULTS:There was no significant difference between the mean Nidek and Zeiss keratometry readings for the steep (0.015 mm; P = .167) or flat (0.054 mm; P = .069) meridian or axis measurements (P = .172). On repeated measurements, the within-subject and within-group variabilities, calculated separately for each instrument, were significantly less for the Nidek automated keratometer than the Zeiss keratometer (P < .01) when measuring the steep and flat meridians. There was however, a significant increase in axis variability using the Nidek keratometer (range 20 degrees; P < .01). CONCLUSION:The Nidek automated keratometer was accurate, reliable, and easy to use and compared favorably with the manual Zeiss keratometer when measuring corneal curvature. In the handheld mode, the Nidek is not suitable for axis measurements. It has the additional advantage of portability.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Noonan CP,Rao GP,Kaye SB,Green JR,Chandna Adoi
10.1016/s0886-3350(98)80333-7subject
Has Abstractpub_date
1998-03-01 00:00:00pages
411-4issue
3eissn
0886-3350issn
1873-4502pii
S0886-3350(98)80333-7journal_volume
24pub_type
临床试验,杂志文章,随机对照试验abstract：:Intraoperative positive pressure with resulting iris and lens prolapse can pose a difficult scenario during penetrating keratoplasty. In the Price graft-over-host technique, the graft is sutured across the trephinated host cornea, which maintains a formed anterior chamber and thus avoids intraoperative complications. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80123-5
更新日期：1998-06-01 00:00:00
abstract：PURPOSE:To measure the relative difficulty of each stage of phacoemulsification surgery performed by basic surgical trainees. SETTING:Mater Misericordiae University Hospital, Dublin, Ireland. METHODS:This prospective study comprised 100 consecutive cases of phacoemulsification performed by 8 trainee surgeons over an ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2006.01.045
更新日期：2006-04-01 00:00:00
abstract：PURPOSE:To describe a no-history method of estimating the effective lens position (ELP) for double-K intraocular lens (IOL) power calculation in eyes that had previous refractive surgery. SETTING:Departments of Ophthalmology, Taipei Medical University Hospital and Taipei City Hospital, Taipei, Taiwan. METHODS:The cor...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2008.08.030
更新日期：2008-12-01 00:00:00
abstract：PURPOSE:To evaluate the use of 2-photon microscopy (TPM), which excites tissue autofluorescence, in detecting and calculating the grade of collagen corneal crosslinks, which are not visible through the slitlamp and in vivo confocal microscopy. SETTING:Departments of Ophthalmology, University of Lübeck, Lübeck, and Uni...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2010.06.068
更新日期：2010-12-01 00:00:00
abstract：:Three children were born with partial corneal opacity and anterior segment anomalies but no cataract (Peter's anomaly type 1). In each affected eye, the corneal scar was off center and encroached on the visual axis. Glaucoma (if present) was controlled medically or surgically, after which an optical iridectomy was per...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80272-1
更新日期：1998-05-01 00:00:00
abstract：PURPOSE:To evaluate long-term intraocular pressure (IOP) control after extracapsular cataract extraction (ECCE) with posterior chamber intraocular lens (IOL) implantation in patients with primary angle-closure glaucoma. SETTING:Ophthalmology Department, Groote Schuur Hospital, Cape Town, South Africa. METHODS:This re...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(97)80255-6
更新日期：1997-07-01 00:00:00
abstract：:We present a patient who developed partial ptosis after laser in situ keratomileusis. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2003.12.028
更新日期：2004-07-01 00:00:00
abstract：:The complement activation potential of surface modified (passivated) poly(methyl methacrylate) (PMMA) intraocular lenses (IOLs) with polypropylene loops was compared to that of standard PMMA IOLs with polypropylene loops. Both lens types were incubated in human sera for six hours and then the C3a and C5a levels were m...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80243-x
更新日期：1991-03-01 00:00:00
abstract：PURPOSE:To study the results of simultaneous photorefractive keratectomy (PRK) and corneal collagen crosslinking (CXL) in keratoconus after previous intrastromal corneal ring segment (ICRS) implantation. SETTING:Enaim Laser Center, Jerusalem, Israel. DESIGN:Case series. METHODS:This study comprised patients with mod...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2012.05.033
更新日期：2012-10-01 00:00:00
abstract：:We present a series of nine cases involving primary intraocular lens implantation in congenital cataracts. Because of the problems encountered with the technique used in the earlier cases, we developed a new surgical technique that may be described as primary epilenticular posterior chamber lens implantation followed ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(88)80088-9
更新日期：1988-03-01 00:00:00
abstract：PURPOSE:To establish a refractive surgery unit at Tilganga Institute of Ophthalmology through support from international donations and provide knowledge transfer for doctors and management to make the unit self-sustaining, nonprofit laser refractive surgery, and financial support for other eyecare projects at Tilganga....
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2018.05.023
更新日期：2018-08-01 00:00:00
abstract：PURPOSE:To evaluate irregularity of the anterior and posterior cornea before and after Descemet-stripping endothelial keratoplasty (DSEK) and its effect on visual acuity. SETTING:Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan. METHODS:Corneal data were acquired using a rotating Scheimpf...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2008.11.062
更新日期：2009-04-01 00:00:00
abstract：PURPOSE:To compare the outcomes of combined cataract surgery with trabecular microbypass stents and ab interno trabeculotomy in patients with open-angle glaucoma. SETTING:University of Toronto, Toronto, Ontario, and University of Montreal, Montreal, Quebec, Canada, and Glaucoma Associates of Texas, Dallas, Texas, USA....
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2014.12.061
更新日期：2015-08-01 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：:Nordan epikeratophakia technique (NET) is described for the treatment of hyperopia and the results in eight eyes are reported (mean = +5.09 +/- 0.85 diopters preoperatively and -2.09 +/- 1.22 diopters postoperatively). The Nordan epikeratophakia technique is a modification of Kaufman-McDonald epikeratophakia with adva...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(89)80033-1
更新日期：1989-11-01 00:00:00
abstract：:We describe a case of pigmentary dispersion syndrome resulting from secondary piggyback implantation of a 3-piece hydrophobic acrylic squared-edged intraocular lens (IOL) in the ciliary sulcus. The intraocular pressure remained elevated despite pharmacological treatment, with a heavily pigmented trabecular meshwork. T...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.01.044
更新日期：2007-06-01 00:00:00
abstract：UNLABELLED:We present a new option for visual rehabilitation of patients with advanced macular degeneration and evaluate the outcomes in the first 8 patients who had implantation of the ciliary sulcus-fixated macular add-on intraocular lens (IOL) (Scharioth Macula Lens) at our institute. The surgical technique for impl...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.07.018
更新日期：2015-08-01 00:00:00
abstract：:A 52-year-old man had loss of vision and black discoloration of the lids of the right eye after a retrobulbar injection of 3 mL lidocaine hydrochloride 2% (Xylocaine). Examination of the right eye revealed no light perception with extensive necrosis of the lids. Anterior segment examination revealed conjunctival pallo...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(02)01747-9
更新日期：2003-04-01 00:00:00
abstract：PURPOSE:To observe changes in intraocular pressure (IOP), the manner in which the eye is suctioned, and the effect of the number of suction ports. SETTING:Department of Ophthalmology, Tokyo Dental College, Suidobashi Hospital, Tokyo, Japan. METHODS:Suction rings with single or dual ports were made of transparent acry...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.06.085
更新日期：2005-03-01 00:00:00
abstract：PURPOSE:To investigate the prevalence of preoperative cataract surgery testing and consultation at a single United States teaching hospital. SETTING:Academic-affiliated Veterans Affairs Medical Center. DESIGN:Retrospective chart review. METHODS:This study included patients who received cataract surgery from 2014 to ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000153
更新日期：2020-06-01 00:00:00
abstract：PURPOSE:To understand, demonstrate, and further research the mechanisms of accommodation and presbyopia. SETTING:Private practice, Little Silver, New Jersey, USA. DESIGN:Experimental study. METHODS:The CAMA 2.0 computer-animated model of accommodation and presbyopia was produced in collaboration with an experienced ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2014.07.028
更新日期：2015-02-01 00:00:00
abstract：PURPOSE:To audit the surgical and postoperative complications and the visual outcomes of standing phacoemulsification and compare these with the results of conventional seated phacoemulsification. SETTING:District general hospital, Sidcup, England. DESIGN:Prospective comparative case series. METHODS:This prospective...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2010.04.031
更新日期：2010-10-01 00:00:00
abstract：:Small incision cataract surgery has several advantages over conventional surgery, including faster postoperative visual rehabilitation. We evaluated 100 consecutive cases of no-stitch, small incision surgery with a square sclerocorneal tunnel and a flexible intraocular lens. Permanent self-sealing of the wound seemed ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80234-9
更新日期：1994-09-01 00:00:00
abstract：:Cataract surgery can be safely performed in patients with Stevens-Johnson syndrome (SJS) with visually significant cataracts. Maintaining ocular surface integrity improves the prognosis of cataract surgery in this high-risk population. We present the outcome of cataract surgery in a retrospective chart review of 3 eye...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.07.023
更新日期：2005-04-01 00:00:00
abstract：:According to an online survey, most members of the American Society of Cataract and Refractive Surgery believe that tamsulosin makes cataract surgery more difficult (95%) and increases the risks of surgery (77%). Commonly reported complications of intraoperative floppy-iris syndrome (IFIS) were significant iris trauma...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2008.04.014
更新日期：2008-07-01 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：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：:Over 100 cases of standard extracapsular cataract extraction with intraocular lens implantation were reviewed and the effects of two commercially available pharmacological agents were compared. The treatment groups received either acetylcholine chloride (Miochol) or carbachol (Miostat). Intraocular pressures were meas...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(89)80008-2
更新日期：1989-03-01 00:00:00
abstract：:This study examined resident exposure to and competency in new techniques for cataract removal and intraocular lens (IOL) implantation. A questionnaire was sent to 116 United States ophthalmology program directors and completed by 71. In response to the questionnaire, program directors reported that 95.3% of their gra...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2017.10.014
更新日期：2017-10-01 00:00:00
abstract：PURPOSE:To describe how to approach eyes with phakic or pseudophakic bullous keratopathy that have an anterior chamber intraocular lens (AC IOL) using thin Descemet-stripping endothelial keratoplasty (thin-DSEK) or Descemet membrane endothelial keratoplasty (DMEK) with or without AC IOL removal. SETTING:Tertiary refer...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2013.05.045
更新日期：2013-12-01 00:00:00
