Abstract：
PURPOSE:To compare neodymium:YAG (Nd:YAG) laser effects on acrylic, silicone, and poly(methyl methacrylate) (PMMA) intraocular lens (IOL) polymers. METHODS:Ten Nd:YAG laser exposures were produced in each of 6 implantation-quality acrylic (Alcon MA60BM), silicone (Staar AQ1016), and PMMA (Alcon MC60BM) IOLs under identical conditions. Each polymer type was irradiated at 6 power settings (0.3, 0.5, 1.0, 1.5, 2.0, and 3.0 mJ) and at 2 focal points (midpoint of lens optic and on the posterior surface to which a cellophane membrane was affixed). The linear extent of the damage was measured using light microscopy. Specimens exposed to 1.0 mJ were processed for scanning electron microscopy. RESULTS:The damage threshold (> or = 5 microns depth) was 0.3 mJ for silicone and 1.0 mJ for acrylic and PMMA IOLs. At the clinically relevant power levels, 1.0 to 2.0 mJ, the depth of damage in the acrylic polymer was 11.9 to 30.5 times less than the depth in the silicone polymer. Similarly, the depth of damage in the PMMA polymer was 5.4 to 52.6 times less than the depth in the silicone polymer. The morphologic pattern of damage in the silicone IOL showed a deep, irregularly configured trough with meandering tendrils. Acrylic IOL damage morphology consisted of an ameboid-shaped entry site without radiating fractures and mild posterior penetration. Poly(methyl methacrylate) IOL damage consisted of a shallow focal trough with radiating fractures. CONCLUSIONS:The silicone IOL polymer had the lowest threshold for laser-induced damage and greater linear extension of damage than the PMMA and acrylic IOL polymers. Poly(methyl methacrylate) and silicone polymers exhibited collateral damage or ejected particulates adjacent to the entry site, whereas the acrylic polymer showed a discrete locus of damage.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Newland TJ,McDermott ML,Eliott D,Hazlett LD,Apple DJ,Lambert RJ,Barrett RPdoi
10.1016/s0886-3350(99)80014-5subject
Has Abstractpub_date
1999-01-01 00:00:00pages
72-6issue
1eissn
0886-3350issn
1873-4502pii
S0886-3350(99)80014-5journal_volume
25pub_type
杂志文章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：:Iris fixation of posterior chamber intraocular lenses (IOLs) is a technique that has been recommended for patients in whom a posterior chamber IOL is indicated but there is insufficient capsular support. We present 4 cases of iris-fixated posterior chamber IOLs with complications related to the procedure. Three patien...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.06.048
更新日期：2005-12-01 00:00:00
abstract：PURPOSE:To compare carticaine 4% and lidocaine 2% for peribulbar anesthesia in cataract surgery. SETTING:Ain Shams and Cairo University Hospitals, Cairo, Egypt. METHODS:This prospective double-blind randomized study comprised 200 cataract patients assigned to 1 of 2 groups of 100 each based on type of anesthesia: car...
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(01)01140-3
更新日期：2002-03-01 00:00:00
abstract：PURPOSE:To compare the efficacy and safety of anterior capsulotomy creation with a new selective laser device (CAPSULaser) with those of manual capsulotomies. SETTING:GEMINI Eye Clinic, Zlin, Czech Republic. DESIGN:Prospective case series. METHODS:Patients were placed in cohorts based on age and cataract grade and r...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2018.12.012
更新日期：2019-05-01 00:00:00
abstract：PURPOSE:To evaluate the feasibility and safety of laser treatments in rabbit eyes fitted with an implantable miniature telescope (IMT). SETTING:The Goldschleger Eye Research Institute, Tel-Aviv University, Sheba Medical Center, Tel-Hashomer, Israel. METHODS:In this study, IMTs were implanted in the capsular bag in 19...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(02)01647-4
更新日期：2003-05-01 00:00:00
abstract：PURPOSE:To optimize the implantable collamer lens (ICL) sizing method using anterior segment optical coherence tomography (AS-OCT). SETTING:Nagoya Eye Clinic, Nagoya, Japan. DESIGN:Interventional case series. METHODS:A stepwise multiple regression analysis was performed using the optimal ICL size as a dependent vari...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000134
更新日期：2020-05-01 00:00:00
abstract：PURPOSE:To study the safety of irrigation with 5-fluorouracil (5-FU) in the Perfect Capsule sealed-capsule irrigation device (Milvella, Ltd., Epping, Australia). SETTING:St. Erik's Eye Hospital, Stockholm, Sweden. METHODS:Thirty 8-week-old rabbits were divided into 4 groups. Clear lens extraction was performed and th...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.05.012
更新日期：2007-09-01 00:00:00
abstract：PURPOSE:To analyze the centration of intrastromal ring segments (Intacs, Addition Technology, Inc.) implanted using a femtosecond laser in eyes with keratoconus. SETTING:Kudret Eye Hospital, Ankara, Turkey. METHODS:In a retrospective noncomparative case series, the distance of deviation of the intrastromal ring segme...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2006.11.007
更新日期：2007-03-01 00:00:00
abstract：PURPOSE:To evaluate and compare the predictability and safety of immediate small-incision lenticule extraction, also known as SMILE, after suction loss during the procedure with those of uneventful small-incision lenticule extraction. SETTING:Nunemiso Eye Center, Seoul, South Korea. DESIGN:Retrospective case series. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2016.12.034
更新日期：2017-04-01 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：:A multizone/multipass photorefractive keratectomy (MP-PRK) technique was used to treat 315 eyes with the 193 nm VISX 20/20 excimer laser. Algorithms were developed to treat the full range of myopia, including 170 low myopic eyes (-1.0 to -6.0 diopters [D]), 105 moderately myopic eyes (-6.0 to -10.0 D), and 40 highly m...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80559-7
更新日期：1995-11-01 00:00:00
abstract：PURPOSE:To evaluate the influence of posterior corneal astigmatism on total corneal astigmatism in patients with 1.00 diopter (D) or more of corneal astigmatism. SETTING:Private practice, Bologna, Italy. DESIGN:Prospective case series. METHODS:Corneal astigmatism was measured using a Scheimpflug camera combined with...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2014.01.046
更新日期：2014-10-01 00:00:00
abstract：:A new instrument that aids in retreating or revising lamellar refractive surgery is described. The edge delineator and lifter can both delineate and lift the edge of a previously made corneal flap. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80252-6
更新日期：1998-05-01 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：:Corectopia, the eccentric displacement of the pupil, may be associated with other abnormalities such as axial high myopia or ectopia lentis. We report the case of a patient presenting for surgery to correct bilateral myopia of 6.50 diopters (D) associated with corectopia. Excimer laser ablation was decentered and perf...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)00018-8
更新日期：1999-05-01 00:00:00
abstract：:We report two cases in which hydrogel lens implants have dislocated posteriorly into the vitreous body following YAG laser capsulotomy. These lenses were placed in the bag in conjunction with a capsulorhexis. A comparison with our results using silicone and poly(methyl methacrylate) implants indicates that this phenom...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80770-5
更新日期：1990-09-01 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
abstract：PURPOSE:To compare the long-term refractive effects of small-incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) on the correction of high myopia and astigmatism. SETTING:The Eye and ENT Hospital of Fudan University, Shanghai, China. DESIGN:Retrospective case s...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000075
更新日期：2020-03-01 00:00:00
abstract：PURPOSE:To determine whether preoperative assessment of posterior capsule integrity using anterior segment optical coherence tomography (AS-OCT) can predict posterior capsule dehiscence in patients with posterior polar cataract having phacoemulsification. SETTING:Aravind Eye Hospital and Postgraduate Institute of Opht...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2018.07.056
更新日期：2018-12-01 00:00:00
abstract：PURPOSE:To evaluate the effect of a capsular tension ring (CTR) on the shape of the capsular bag, the extent of the capsular opening, and the shape of intraocular lenses (IOLs). SETTING:Department of Ophthalmology, College of Medicine, The Catholic University of Korea, Seoul, Korea. METHODS:The corneal button was rem...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(00)00610-6
更新日期：2001-03-01 00:00:00
abstract：PURPOSE:To evaluate the agreement of ocular measurements obtained with a new optical biometer (AL-Scan) and a previously validated optical biometer (Lenstar). SETTING:Eye Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China. DESIGN:Prospective observational cross-sectional study. METHODS:For a comprehens...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.05.042
更新日期：2016-01-01 00:00:00
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 w...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jcrs.2018.11.029
更新日期：2019-05-01 00:00:00
abstract：PURPOSE:To analyze refractive results after hyperopic presbyopia surgery by Q-factor modulation without additive monovision. SETTING:Quinze-Vingts National Ophthalmology Hospital, Paris, France. DESIGN:Prospective nonrandomized study. METHODS:Forty-five hyperopic presbyopic patients not tolerating monovision were in...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2019.02.039
更新日期：2019-08-01 00:00:00
abstract：PURPOSE:To evaluate transient increases in intraocular pressure (IOP) after use of high-viscosity viscoelastic agents in cataract surgery. SETTING:Military Hospital, Ulm, Germany. METHODS:In a prospective, randomized study, we evaluated IOP following cataract surgery using two different viscoelastic substances (Healo...
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)80224-0
更新日期：1996-03-01 00:00:00
abstract：PURPOSE:To evaluate the position of posterior chamber intraocular lenses (PC IOLs) at distance and near and the amplitude of pseudoaccommodation in young eyes. SETTING:Department of Ophthalmology, University School of Medical Sciences, Bydgoszcz, Poland. METHODS:This study comprised 45 eyes of 38 patients aged 12 to ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)00407-1
更新日期：2000-04-01 00:00:00
abstract：PURPOSE:To compare the intended versus the resultant thickness of laser in situ keratomileusis (LASIK) flaps created with a new femtosecond laser and to report the 3-month postoperative refractive outcomes. SETTING:Wellington Eye Clinic, Dublin, Ireland. DESIGN:Retrospective consecutive case series. METHODS:A consec...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2012.10.041
更新日期：2013-03-01 00:00:00
abstract：:This study reports a technique in which phacoemulsification and intraocular lens (IOL) insertion are performed in conjunction with a microkeratome flap in a patient with ocular surface disease. Microkeratome-assisted phacoemulsification was performed in a 72-year-old woman with a history of trachoma during childhood. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.02.038
更新日期：2005-09-01 00:00:00
abstract：PURPOSE:To compare the performance of the Marco Nidek ARK-530A autorefractor pupillometer function and the Keeler PupilScan II pupillometer (study pupillometer) against the clinical standard NeurOptics PLR-200 pupillometer (standard pupillometer) for measurement of the dark-adapted pupil diameter. SETTING:Department o...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2010.10.059
更新日期：2011-04-01 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 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
