Abstract:
:We used ultrasound to measure axial length in 66 eyes before and three months after extracapsular cataract extraction with implantation of a posterior chamber lens. An ultrasound velocity of 2,718 m/s for poly(methyl methacrylate) was assumed. The intraindividually measured difference (postoperative--preoperative axial length) ranged from -0.4 mm to 0.6 mm and averaged 0.11 mm. The lengthening of the eye was statistically significant (P less than .001; two-tailed, paired t-test). Statistical analysis of the regression equation between the preoperative and the postoperative axial lengths disclosed that this correlation was not more accurate than simply substituting the two measurements. Assuming no real change in axial lengths, our data suggest an ultrasound velocity of 1,679 m/s for the natural lens or an average velocity of 1,560 m/s for the phakic eye. We conclude that the preoperatively measured axial length may be used as a fairly accurate estimate of the postoperative distance in intraocular lens power calculation formulas.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Naeser K,Naeser A,Boberg-Ans J,Bargum Rdoi
10.1016/s0886-3350(89)80035-5subject
Has Abstractpub_date
1989-11-01 00:00:00pages
673-5issue
6eissn
0886-3350issn
1873-4502pii
S0886-3350(89)80035-5journal_volume
15pub_type
杂志文章abstract::Unwanted optical images are noticed by a surprisingly large number of patients following cataract extraction with implantation of posterior chamber intraocular lenses (IOLs). These images are caused by the positioning holes, lens edge, or laser ridge. We studied 550 eyes in which one of seven different IOLs was insert...
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(89)80113-0
更新日期:1989-09-01 00:00:00
abstract:UNLABELLED:A 22-year-old white man presented with photopsia of 3-year duration despite a corrected distance visual acuity of 20/20 in both eyes. Ophthalmic examination revealed multiple irregularly shaped white cortical opacifications of the lens in both eyes but no other significant ocular findings. One year after the...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2016.06.007
更新日期:2016-07-01 00:00:00
abstract:PURPOSE:To compare the effect of erbium:YAG laser photocapsulotomy (ELC), continuous curvilinear capsulorhexis (CCC), and high-frequency capsulotomy (HFC) on anterior capsule edges using light microscopy (LM) and transmission electron microscopy (TEM). SETTING:Department of Ophthalmology, Department of Histology and E...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/S0886-3350(03)00652-7
更新日期:2004-01-01 00:00:00
abstract::Cataract surgery was performed in a 63-year-old man with bilateral coloboma of the lens. There was no traumatic history, but the patient had lower zonule deficiency and zonular weakness in both eyes, leading us to suspect congenital coloboma of the lens. In the first eye having cataract surgery, it was impossible to r...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/S0886-3350(03)00585-6
更新日期:2004-02-01 00:00:00
abstract::Postoperative lens capsule opacification is a complication of extracapsular cataract extraction. To avoid this problem, we aspirated the epithelial cells lining the internal surface of the capsular bag. Anterior capsule specimens collected three and six years after the first surgical intervention (extracapsular catara...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80302-1
更新日期:1993-05-01 00:00:00
abstract:PURPOSE:Iris intraocular implants were developed to manage congenital or traumatic iris defects. However, they are also used to change the color of patient eyes. The aim of this retrospective series was to report complications in patients managed in France after cosmetic implantation. SETTING:Ophthalmological institut...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1097/j.jcrs.0000000000000032
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To determine whether radial transsection of the inner lamina of the phaco tunnel (T-cut) allows intraocular pressure (IOP) control in cases of co-existing cataract and glaucoma and to evaluate the results of this glaucoma triple procedure. SETTING:Department of Ophthalmology, Hanusch Hospital, Vienna, Austria....
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(99)00454-x
更新日期:2000-05-01 00:00:00
abstract::To compare the effect of a fixed dorzolamide-timolol combination with that of latanoprost on intraocular pressure (IOP) after small incision cataract surgery. Department of Ophthalmology, University of Vienna, Vienna, Austria. This prospective randomized study comprised 60 eyes of 30 patients scheduled for small incis...
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(00)00706-9
更新日期:2001-05-01 00:00:00
abstract:PURPOSE:To compare the effectiveness of 2 medications commonly used to prevent intraocular pressure (IOP) elevation in the early period after cataract surgery. SETTING:Palo Alto Veterans Affairs Health Care System, Palo Alto, California, USA. METHODS:This prospective study comprised 202 eyes of patients scheduled for...
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(98)80172-7
更新日期:1998-11-01 00:00:00
abstract:PURPOSE:To compare differences in anterior (ACO) and posterior (PCO) capsule opacification and subjective glare between 2 acrylic intraocular lenses (IOLs): AcrySof MA30BA (Alcon) and Sensar AR40 (Allergan). SETTING:Department of Ophthalmology and Neurosurgery, University of Siena, Siena, Italy. METHODS:This retrospe...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(02)01427-x
更新日期:2002-07-01 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 assess the correlation between continuous curvilinear capsulorhexis (CCC) size and visual outcomes in patients with an accommodating intraocular lens (IOL). SETTING:Heidelberg IOL and Refractive Surgery Research Group, Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2004.02.071
更新日期:2005-02-01 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 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::A 39-year-old man was referred with complaints of pain, redness, and reduced vision in the left eye after projectile trauma during hammering. Two years previously, anterior chamber phakic intraocular lenses (pIOLs) had been implanted to correct the patient's high myopia. On presentation, the best corrected visual acui...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2007.07.022
更新日期:2007-12-01 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::We reviewed the medical records of 1,726 eyes consecutively operated on with extracapsular cataract extraction to examine the incidence of and the risk factors for retinal detachment (RD). In Denmark, both diagnoses and deaths are registered centrally; therefore, a complete follow-up was achieved in each case and actu...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80333-1
更新日期:1993-11-01 00:00:00
abstract::Recently manufactured intraocular lenses (IOLs) (STAAR AA 4203 made of silicone and IOGEL PC-12 made of polyHEMA) were tested before and after implantation simulation for axial optical resolution (model eye), for optical surface quality (photokeratoscope), and for surface microtrauma (scanning electron microscopy). At...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80733-x
更新日期:1990-03-01 00:00:00
abstract::Most surgical procedures involving the anterior segment of the eye disrupt the normal organization of corneal innervation. Since denervation of the cornea results in impaired epithelial wound healing, increased epithelial permeability, decreased epithelial metabolic activity, and loss of cytoskeletal structures associ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章,评审
doi:10.1016/s0886-3350(98)80237-x
更新日期:1998-10-01 00:00:00
abstract:PURPOSE:To report the results of transscleral implantation of foldable intraocular lenses (IOLs). SETTING:Department of Ophthalmology Dokuz Eylül University School of Medicine, Izmir, Turkey. METHODS:Twenty eyes of 20 patients had transscleral fixation of a foldable IOL combined with conventional 3-port pars plana vi...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2003.09.050
更新日期:2004-04-01 00:00:00
abstract:PURPOSE:To investigate the change in anterior, posterior, and net corneal power more than 18 months after photorefractive keratectomy (PRK) by RTVue anterior segment optical coherence tomography (OCT). SETTING:Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. DESIGN:Prospective observational s...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1097/j.jcrs.0000000000000224
更新日期:2020-08-01 00:00:00
abstract::We present a case of late traumatic flap dislocation 47 months after laser in situ keratomileusis (LASIK). This is the latest reported case of traumatic LASIK flap dislocation to date. The patient was examined 5 days after being struck in the face and found to have a flap dislocation. The flap was repositioned surgica...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2005.01.022
更新日期:2005-08-01 00:00:00
abstract::Injection molded poly(methyl methacrylate) (IM-PMMA), lathe-cut PMMA (LC-PMMA), heparin surface modified PMMA (HSM-PMMA), silicone, and polyhydroxyethyl methacrylate (polyHEMA) intraocular lenses (IOLs) were incubated with platelets, granulocytes, mouse macrophage-like RAW 264.7 cells and mouse fibrosarcoma L929 cells...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(13)80900-5
更新日期:1992-05-01 00:00:00
abstract:PURPOSE:To determine and compare the amount of apoptosis and changes in rabbit corneal endothelial cell morphology after intracameral administration of different anesthetic agents. SETTING:Department of Ophthalmology, Baskent University Medical Faculty, Ankara, Turkey. METHODS:Right eyes of 64 Vienna white rabbits we...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2008.12.016
更新日期:2009-04-01 00:00:00
abstract:PURPOSE:To report the incidence, management, and prevention of patient reports of glare and streaks around a point source of light or a dark shadow in the temporal field of vision after acrylic intraocular lens (IOL) implantation. SETTING:A private practice. METHODS:Cases in which patients complained vigorously of dy...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(00)00611-8
更新日期:2000-09-01 00:00:00
abstract::A study to determine the correlation between intraoperative quantitative keratometry and one day postoperative office keratometry was performed. Prior reports have failed to demonstrate a positive statistical relationship between surgical and postoperative keratometry, weakening the value of quantitative intraoperativ...
journal_title:Journal of cataract and refractive surgery
pub_type: 临床试验,杂志文章
doi:10.1016/s0886-3350(88)80116-0
更新日期:1988-05-01 00:00:00
abstract::We report 2 cases of postoperative intraocular pressure (IOP) elevation in secondary piggyback intraocular lens (IOL) implantation without history of glaucoma or ocular hypertension. A 74-year-old woman with myopic pseudophakia and a 68-year-old man with hyperopic pseudophakia received secondary piggyback AcrySof IOL ...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/j.jcrs.2005.06.034
更新日期:2005-09-01 00:00:00
abstract:PURPOSE:Because the optical performance of eyes implanted with multifocal intraocular lenses will theoretically depend upon the size and position of the pupil relative to the near and distance zones of the lens, we designed a study to determine whether preoperative pupil size is useful in predicting the postoperative p...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(96)80013-7
更新日期:1996-06-01 00:00:00
abstract::A poly(methyl methacrylate)(PMMA) intraocular lens (IOL) dislocated into the vitreous cavity in 2 patients after a neodymium:YAG (Nd:YAG) laser posterior capsulotomy. In Case 1, the capsulotomy was performed 19 months after extracapsular cataract extraction (ECCE) and sulcus fixation of an IOL. Six months later the IO...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(98)80182-x
更新日期:1998-11-01 00:00:00
abstract:PURPOSE:To correlate cycloplegic subjective refraction with cycloplegic autorefractometry in eyes that have had laser in situ keratomileusis (LASIK). SETTING:Vlemma Eye Institute, Athens, Greece. METHODS:Subjective refraction and autorefractometry under cycloplegia were performed in 73 eyes of 46 patients 1, 6, and 1...
journal_title:Journal of cataract and refractive surgery
pub_type: 杂志文章
doi:10.1016/s0886-3350(02)01743-1
更新日期:2003-01-01 00:00:00