Abstract：
PURPOSE:To assess the accuracy of the scanning electron microscopy (SEM) and present alternative approaches to quantify surface roughness based on numerical analysis. SETTING:Department of Ophthalmology, Maisonneuve-Rosemont Hospital, University of Montreal, Montreal, Quebec, Canada. DESIGN:Experimental study. METHODS:Lamellar stromal cuts were performed on human corneas using a femtosecond laser or a microkeratome. The photodisrupted stromal surfaces were processed for SEM, and images were acquired at ×1000 magnification. First, images were evaluated by independent observers. Second, images were analyzed based on first-order and second-order statistics of gray-level intensities. Third, 3-dimensional (3-D) surface reconstructions were generated from pairs of SEM images acquired at 2 angles. RESULTS:Results show that traditional assessment of roughness based on evaluating SEM images by independent observers can be replaced by computer-image texture analysis; an algorithm was developed to avoid subjective and time-consuming observations. The 3-D reconstructions allowed additional characterization of surface properties that was not possible with SEM images alone. Significant fluctuations in surface height were lost, although they could be retrieved using 3-D reconstructions. CONCLUSIONS:Image texture analysis allowed objective and repeatable assessment of stromal surface roughness; however, full assessments of surface-height fluctuations required 3-D reconstruction. These complementary methodologies offer a more comprehensive assessment of corneal surface roughness in clinical applications.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Marian A,Nada O,Légaré F,Meunier J,Vidal F,Roy S,Brunette I,Costantino Sdoi
10.1016/j.jcrs.2012.08.050subject
Has Abstractpub_date
2013-01-01 00:00:00pages
118-127issue
1eissn
0886-3350issn
1873-4502pii
S0886-3350(12)01302-8journal_volume
39pub_type
杂志文章abstract：PURPOSE:To assess patient comfort with and without intravenous (i.v.) cannulation during 1-quadrant sub-Tenon's anesthesia during phacoemulsification. SETTING:Royal Alexandra Hospital, Paisley, Scotland, United Kingdom. METHODS:This prospective masked controlled clinical trial comprised 119 patients having elective c...
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(03)00247-5
更新日期：2003-06-01 00:00:00
abstract：:Four patients with diabetes mellitus had cataract extraction with implantation of a hydrophilic acrylic intraocular lens (IOL) (ACRL-C160, Ophthalmed). The IOLs showed progressive and generalized opacification 10 to 20 months after implantation, decreasing visual acuity. All 4 IOLs were removed. By light microscopic e...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(02)01245-2
更新日期：2002-07-01 00:00:00
abstract：:Twenty-three eyes of 20 patients who had had myopic epikeratoplasty were evaluated and the mean 21-month postoperative results (range: 12 to 47 months) tabulated. Average preoperative myopia was -16.7 diopters (D) spherical equivalent (range: -10 to -33 D), and average postoperative refractive correction was 13 D. Of ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80305-7
更新日期：1993-05-01 00:00:00
abstract：PURPOSE:To provide mathematical tools for selecting intraocular lens (IOL) power for normal eyes and for "odd" eyes, particularly after corneal refractive surgery. SETTING:Universitats-Augenklinik, Mainz, Germany. METHODS:First, IOL power is selected based on the radii and numerical eccentricity of the cornea, extrac...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.09.016
更新日期：2005-03-01 00:00:00
abstract：PURPOSE:To evaluate the long-term effects of excimer laser treatment for ametropia after surgical treatment of rhegmatogenous retinal detachment (RRD) with scleral buckles. SETTING:Helsinki University Eye Hospital, Helsinki, Finland. METHODS:Ten patients (10 eyes) who had 1 or more surgeries for RRD followed by refra...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.06.023
更新日期：2007-10-01 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 assess the predictability, efficacy, stability and safety of implantation of an Artisan (Ophtec BV, the Netherlands) iris-fixated phakic intraocular lens (IF-pIOL) for the correction of hyperopia with a follow-up of up to 15 years. SETTING:Leiden University Medical Center, The Netherlands METHODS:: Patients...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000532
更新日期：2020-11-27 00:00:00
abstract：:Three cases are described in which a curvilinear lucency in the corneal stroma signified a surgical thermal injury. The "shark fin" appearance represents focal shrinkage of tissue within the incisional tunnel. ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.11.034
更新日期：2005-03-01 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 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 evaluate the safety of a new suprachoroidal device, the Cypass micro-stent, for the surgical treatment of open-angle glaucoma (OAG) implanted in conjunction with cataract surgery. SETTING:Multicenter clinical study. DESIGN:Prospective interventional case series. METHODS:This is an interim report of an ong...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章,多中心研究
doi：10.1016/j.jcrs.2012.10.040
更新日期：2013-03-01 00:00:00
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 iden...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)80014-5
更新日期：1999-01-01 00:00:00
abstract：:The ocular response analyzer (ORA) (Reichert, Inc.) was used in the case of a middle-aged man who developed unilateral corneal ectasia after bilateral laser in situ keratomileusis (LASIK). The preoperative refraction was similar in the 2 eyes. Post-LASIK ectasia was central in the left eye; topography was oblate in th...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.11.018
更新日期：2008-03-01 00:00:00
abstract：PURPOSE:To compare the development of posterior capsule opacification (PCO) and neodymium:YAG (Nd:YAG) capsulotomy rates between 2 microincision intraocular lenses (IOLs) 4 years after surgery. SETTING:Department of Ophthalmology, Medical University of Vienna, Vienna, Austria. DESIGN:Prospective randomized clinical t...
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.2014.09.037
更新日期：2015-05-01 00:00:00
abstract：:We present the case of a 9-year-old boy with megalocornea and juvenile cataracts. Bilateral lens aspiration and acrylic intraocular lens (IOL) implantation were performed under general anesthesia. After the surgery, both IOLs gradually decentered. Posterior capsule opacification was a further complication, necessitati...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2007.08.026
更新日期：2008-01-01 00:00:00
abstract：PURPOSE:To assess the repeatability and agreement of corneal power, corneal astigmatism, axis location, and astigmatic vector component measurements using an autokeratometer and a corneal topographer in healthy subjects. SETTING:Department of Ophthalmology, Kitasato University, Kanagawa, Japan. DESIGN:Evaluation of d...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2011.11.026
更新日期：2012-04-01 00:00:00
abstract：:This review surveyed the results and methods of cost-utility analyses of cataract surgery. Thirteen studies were included. Based on decision-theoretic time trade-off, utilities ranged from 0.148 to 0.8 and quality-adjusted life years (QALY) ranged from 1.424 to 2.43. Based on psychometric instruments such as Euroqol 5...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章,评审
doi：10.1016/j.jcrs.2017.05.020
更新日期：2017-06-01 00:00:00
abstract：PURPOSE:To compare the postoperative blood-aqueous barrier (BAB) breakdown induced by phacoemulsification with continuous curvilinear capsulorhexis (CCC) and by extracapsular cataract extraction (ECCE) with a linear capsulotomy. SETTING:Cataract and Refractive Surgery Research Unit, Department of Ophthalmology, St. Th...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(96)80160-x
更新日期：1996-01-01 00:00:00
abstract：UNLABELLED:We describe an approach to transscleral fixation of a foldable posterior chamber intraocular lens (PC IOL) using a 25-gauge pars plana vitrectomy. The technique was used in 80 consecutive eyes, and the results were analyzed for corrected distance visual acuity and safety indicators. Postoperative complicatio...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2015.09.005
更新日期：2015-09-01 00:00:00
abstract：PURPOSE:To compare the effect of 2 poly(methyl methacrylate) (PMMA), 1-piece biconvex intraocular lens (IOL) designs on the cumulative frequency of neodymium:YAG (Nd:YAG) laser posterior capsulotomy. SETTING:Department of Ophthamology, Mayo Clinic, Rochester, Minnesota, USA. METHODS:This retrospective study evaluated...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80019-9
更新日期：1998-09-01 00:00:00
abstract：PURPOSE:To evaluate and compare the efficacy of topical versus retrobulbar anesthesia for cataract surgery performed by a surgeon newly converting to the topical technique. SETTING:Department of Ophthalmology, Moran Eye Center, University of Utah, Salt Lake City, Utah, USA. METHODS:Ninety patients were prospectively ...
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)80143-0
更新日期：1998-06-01 00:00:00
abstract：UNLABELLED:We describe a technique to rescue the continuous curvilinear capsulorhexis (CCC) in cases in which complete radial tears make it impossible to use normal traction forceps. A circumferential path and rapid movement are applied in the plane of the anterior capsule in the direction of the center pupil. This tec...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2012.02.019
更新日期：2012-05-01 00:00:00
abstract：PURPOSE:To evaluate the influence of cataract morphology on the functional vision of patients with age-related cataract and normal macular function and compare subjectively perceived functional impairments to distance visual acuity, reading acuity, and maximum reading speed between cataract types. SETTING:Department o...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.01.038
更新日期：2004-09-01 00:00:00
abstract：PURPOSE:To determine the goodness-of-prediction of the fitting routine by measuring the difference between topographic corneal surfaces and their Zernike reconstructions as a function of polynomial order and optical zone size for various corneal conditions. SETTING:Corneal research laboratory in a university eye cente...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2005.05.025
更新日期：2005-12-01 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 measure the inflammatory reaction in the anterior chamber after lens extraction in a rabbit model and to evaluate the effect of nonsteroidal antiinflammatory drugs (NSAIDs) or steroids on the amount of inflammation as measured by fibrinogen levels in the aqueous humor. SETTING:Animal laboratory, Goldschlege...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2011.12.026
更新日期：2012-05-01 00:00:00
abstract：UNLABELLED:We describe a technique that uses flexible iris hooks to dilate and stabilize the capsular bag in a patient with a very deep set and small eye, narrow palpebral fissure, shallow anterior chamber, and very small pupil, who was scheduled for routine phacoemulsification for a white cataract. At the time of iris...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2014.07.009
更新日期：2014-09-01 00:00:00
abstract：PURPOSE:To evaluate the relationship between baseline corneal hysteresis (CH) and the change in intraocular pressure (IOP) before and after cataract extraction in patients without glaucoma. SETTING:Private practice, New York City, New York, USA. DESIGN:Retrospective cohort study. METHODS:Charts of consecutive patien...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2014.09.040
更新日期：2015-06-01 00:00:00
abstract：:We report a case of bilateral infectious keratitis occurring as a complication of bilateral simultaneous laser in situ keratomileusis enhancement procedures. Corneal scraping from the interface of both eyes grew Staphylococcus aureus. The infection cleared after treatment with fortified cefazolin, fortified gentamicin...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(01)01232-9
更新日期：2002-04-01 00:00:00
abstract：:We describe a technique to prevent late intraocular lens (IOL) subluxation and dislocation that can be associated with progressive zonulopathy. Supracapsular glued IOL fixation is done to retain an intact anterior hyaloid face and avoid vitreous disturbance while providing stable long-term IOL fixation. Phacoemulsific...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2017.02.006
更新日期：2017-03-01 00:00:00
