How to Trip Rapid Review

Step 1: Select articles relevant to your search (remember the system is only optimised for single intervention studies)

Step 2: press

Step 3: review the result, and maybe amend the or if you know better! If we're unsure of the overall sentiment of the trial we will display the conclusion under the article title. We then require you to tell us what the correct sentiment is.

3,095 results for

Refractive Corneal Surgery

by
...
Latest & greatest
Alerts

Export results

Use check boxes to select individual results below

SmartSearch available

Trip's SmartSearch engine has discovered connected searches & results. Click to show

1. Comparison of corneal biomechanical changes after refractive surgery by noncontact tonometry: small-incision lenticule extraction versus flap-based refractive surgery - a systematic review. (PubMed)

Comparison of corneal biomechanical changes after refractive surgery by noncontact tonometry: small-incision lenticule extraction versus flap-based refractive surgery - a systematic review. Corneal refractive surgery disrupts corneal integrity and reduces biomechanical stability in consequence of the beneficial refractive alteration. The minimal invasive cap-based refractive procedure, small-incision lenticule extraction (SMILE), has been proposed to affect corneal integrity less than flap (...) -based procedures, due to the fibre-sparing incision of the strong anterior corneal lamellae. Flap-based procedures include laser-assisted in situ keratomileusis (LASIK), femtosecond laser-assisted in situ keratomileusis (FS-LASIK) and femtosecond lenticule extraction (FLEx). The purpose of this systematic review was to evaluate corneal biomechanical changes by noncontact air pulse tonometry after treatment of myopia/myopic astigmatism with SMILE compared to flap-based refractive surgery. A total

2018 Acta ophthalmologica

2. Re: Hersh et al.: U.S. multicenter clinical trial of corneal collagen crosslinking for treatment of corneal ectasia after refractive surgery (Ophthalmology. 2017;124:1475-1484). (PubMed)

Re: Hersh et al.: U.S. multicenter clinical trial of corneal collagen crosslinking for treatment of corneal ectasia after refractive surgery (Ophthalmology. 2017;124:1475-1484). 29784099 2018 05 22 1549-4713 125 6 2018 Jun Ophthalmology Ophthalmology Re: Hersh et al.: U.S. multicenter clinical trial of corneal collagen crosslinking for treatment of corneal ectasia after refractive surgery (Ophthalmology. 2017;124:1475-1484). e39 S0161-6420(17)33642-4 10.1016/j.ophtha.2018.01.037 De Bernardo (...) Maddalena M Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Salerno, Italy. Electronic address: mdebernardo@unisa.it. Rosa Nicola N Department of Medicine, Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, Salerno, Italy. eng Letter United States Ophthalmology 7802443 0161-6420 2017 12 04 2017 12 18 2018 01 29 2018 5 23 6 0 2018 5 23 6 0 2018 5 23 6 0 ppublish 29784099 S0161-6420(17)33642-4 10.1016/j.ophtha.2018.01.037

2018 Ophthalmology

3. Improving accuracy of corneal power measurement with partial coherence interferometry after corneal refractive surgery using a multivariate polynomial approach (PubMed)

Improving accuracy of corneal power measurement with partial coherence interferometry after corneal refractive surgery using a multivariate polynomial approach To improve accuracy of IOLMaster (Carl Zeiss, Jena, Germany) in corneal power measurement after myopic excimer corneal refractive surgery (MECRS) using multivariate polynomial analysis (MPA).One eye of each of 403 patients (mean age 31.53 ± 8.47 years) was subjected to MECRS for a myopic defect, measured as spherical equivalent, ranging (...) from - 9.50 to - 1 D (mean - 4.55 ± 2.20 D). Each patient underwent a complete eye examination and IOLMaster scan before surgery and at 1, 3 and 6 months follow up. Axial length (AL), flatter keratometry value (K1), steeper keratometry value (K2), mean keratometry value (KM) and anterior chamber depth measured from the corneal endothelium to the anterior surface of the lens (ACD) were used in a MPA to devise a method to improve accuracy of KM measurements.Using AL, K1, K2 and ACD measured after

Full Text available with Trip Pro

2018 Biomedical engineering online

4. Evaluation of Different IOL Calculation Formulas of the ASCRS Calculator in Eyes After Corneal Refractive Laser Surgery for Myopia With Multifocal IOL Implantation. (PubMed)

Evaluation of Different IOL Calculation Formulas of the ASCRS Calculator in Eyes After Corneal Refractive Laser Surgery for Myopia With Multifocal IOL Implantation. To compare the accuracy of different intraocular lens (IOL) calculation formulas available on the American Society of Cataract and Refractive Surgery (ASCRS) post-refractive surgery IOL power calculator for the prediction of multifocal IOL power after previous corneal refractive laser surgery for myopia.An analysis and comparison (...) different from zero (P ⩽ .01). The median absolute error of the Shammas formula (0.52 diopters [D]) was significantly higher compared to all of the other formulas (P < .05), except for the Haigis-L formula (P = .09). Comparing the formulas using no previous data, the Barrett True-K No History formula had the lowest median absolute error (0.33 D, P < .001).The Shammas formula showed the least accuracy in predicting IOL power in eyes with multifocal IOL implantation after previous corneal refractive laser

2019 Journal of Refractive Surgery

5. ASCRS calculator formula accuracy in multifocal intraocular lens implantation in hyperopic corneal refractive laser surgery eyes. (PubMed)

ASCRS calculator formula accuracy in multifocal intraocular lens implantation in hyperopic corneal refractive laser surgery eyes. To evaluate the accuracy of different intraocular lens (IOL) power calculation formulas available on the American Society of Cataract and Refractive Surgery calculator in calculating multifocal IOL power in eyes with previous hyperopic corneal refractive laser surgery.Retrospective case series.Amsterdam University Medical Center, University of Amsterdam, and Retina (...) prediction error than the Masket formula, Barrett True-K formula, and mean value of all formulas (P < .001).All formulas showed comparable accuracy in predicting IOL power in eyes after hyperopic corneal refractive laser surgery except for the modified Masket formula, which performed less accurately than the Masket formula, Barrett True-K formula, and mean value of all formulas.Copyright © 2018 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

2019 Journal of cataract and refractive surgery

6. Racial differences in central corneal thickness and refraction among refractive surgery candidates. (PubMed)

Racial differences in central corneal thickness and refraction among refractive surgery candidates. To examine the preoperative central corneal thickness and refractive status of Caucasians, Hispanics, Asians, and African Americans in a refractive surgery patient population.In a retrospective case series, a total of 803 consecutive eyes, which had no history of anterior segment surgery, underwent central corneal thickness and refraction measurement as part of a preoperative evaluation (...) for refractive surgery from December 1999 to October 2002. Preoperative central corneal thickness was measured by a DGH-550 ultrasonic pachymeter, and spherical equivalence was determined by manifest refraction.This study included Caucasian (34.4%), Hispanic (34.5%), Asian (20.7%), African American (8.9%), and other (1.5%) patients. A one-way analysis of variance (ANOVA) revealed no significant differences in the central corneal thickness measurements among Asians, Hispanics, and Caucasians. However, mean

2017 Journal of Refractive Surgery

7. Cataract surgery with a small-aperture intraocular lens after previous corneal refractive surgery: Visual outcomes and spectacle independence. (PubMed)

Cataract surgery with a small-aperture intraocular lens after previous corneal refractive surgery: Visual outcomes and spectacle independence. Patients who have had previous refractive procedures often require cataract surgery at an early age; however, postoperative results are compromised by corneal aberrations and difficulties achieving a desired refractive endpoint. We describe the use of the IC-8 small-aperture intraocular lens (IOL) in 3 patients who had previous laser in situ (...) in these patients who had cataract surgery after previous corneal refractive surgery.Copyright © 2018 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

2018 Journal of cataract and refractive surgery

8. U.S. Multicenter Clinical Trial of Corneal Collagen Crosslinking for Treatment of Corneal Ectasia after Refractive Surgery. (PubMed)

U.S. Multicenter Clinical Trial of Corneal Collagen Crosslinking for Treatment of Corneal Ectasia after Refractive Surgery. To evaluate the safety and efficacy of corneal collagen crosslinking (CXL) for the treatment of corneal ectasia after laser refractive surgery.Prospective, randomized, multicenter, controlled clinical trial.One hundred seventy-nine subjects with corneal ectasia after previous refractive surgery.The treatment group underwent standard CXL, and the sham control group received (...) riboflavin alone without removal of the epithelium.The primary efficacy criterion was the change over 1 year of topography-derived maximum keratometry (K), comparing treatment with control groups. Secondary outcomes evaluated were corrected distance visual acuity (CDVA), uncorrected distance visual acuity (UDVA), manifest refraction spherical equivalent, endothelial cell count, and adverse events.In the crosslinking treatment group, the maximum K value decreased by 0.7 diopters (D) from baseline to 1

2017 Ophthalmology

9. Comparison of Corneal Power and Astigmatism between Simulated Keratometry, True Net Power, and Total Corneal Refractive Power before and after SMILE Surgery (PubMed)

Comparison of Corneal Power and Astigmatism between Simulated Keratometry, True Net Power, and Total Corneal Refractive Power before and after SMILE Surgery Purpose. To compare the mean corneal power (Km) and total astigmatism (Ka) estimated by three methods: simulated keratometry (simK), true net power (TNP), and total corneal refractive power (TCRP) before and after femtosecond laser small incision lenticule extraction (SMILE) surgery. Methods. A retrospective, cross-sectional study. SimK (...) , TNP, and TCRP from a Scheimpflug analyzer were obtained from 144 patients before and 6 months after SMILE surgery. Km and Ka were recorded as the mean of individual paracentral rings of 1.0 to 8.0 mm (R1 to R8). The surgically induced changes in Km (delta-simK, delta-TNP, and delta-TCRP) and Ka (delta-simKa, delta-TNPa, and delta-TCRPa) were compared to the changes in spherical equivalent of the cycloplegic refraction (delta-SE) and astigmatism (delta-RA). Results. Preoperatively, astigmatism

Full Text available with Trip Pro

2017 Journal of ophthalmology

10. Interocular Axial Length and Corneal Power Differences as Predictors of Postoperative Refractive Outcomes after Cataract Surgery. (PubMed)

Interocular Axial Length and Corneal Power Differences as Predictors of Postoperative Refractive Outcomes after Cataract Surgery. To determine whether differences between eyes in axial length (AL) and corneal power (K) on optical biometry are predictive of refractive outcomes.Retrospective cohort study.A total of 729 patients (1458 eyes) who underwent bilateral phacoemulsification at TLC (Mississauga, Ontario, Canada) from September 2013 to August 2015.We compared the proportion of patients (...) having >0.5 diopters (D) of refractive error from target stratified by interocular axial length differences (IALDs) and interocular K differences (IKDs) between eyes as measured by optical biometry (IOL-Master, Carl Zeiss Meditec, Oberkochen, Germany). Analysis was repeated for 0.25 D or 1.0 D targets and for patients with uncorrected visual acuity (UCVA) >0.3 logarithm of the minimum angle of resolution (logMAR) postoperatively.Proportions, odds ratios (ORs), and corresponding 95% confidence

2018 Ophthalmology

11. Corneal biomechanics after laser refractive surgery: Unmasking differences between techniques. (PubMed)

Corneal biomechanics after laser refractive surgery: Unmasking differences between techniques. The hypothesis that small-incision lenticule extraction provides better preservation of corneal biomechanics than previous laser refractive techniques has led to a growth in the interest in clinical and experimental research in this field. This hypothesis is based on the fact that corneal layers with greater stiffness are preserved with this new technique. However, this hypothesis is controversial (...) because clinical research has shown a great disparity in the outcomes. In this review, we performed an in-depth analysis of the factors that might affect corneal biomechanics in laser refractive surgery procedures from a macrostructural to a microstructural viewpoint. New advances in algorithms with current devices or the introduction of new devices might help unmask the possible advantages of small-incision lenticule extraction in corneal biomechanics.Copyright © 2018 ASCRS and ESCRS. Published

2018 Journal of cataract and refractive surgery

12. Corneal Apical Scar After Hyperopic Excimer Laser Refractive Surgery: Long-term Follow-up of Treatment With Sequential Customized Therapeutic Keratectomy. (PubMed)

Corneal Apical Scar After Hyperopic Excimer Laser Refractive Surgery: Long-term Follow-up of Treatment With Sequential Customized Therapeutic Keratectomy. To evaluate long-term results of sequential customized therapeutic keratectomy (SCTK) in highly aberrated corneas with apical scars consequent to hyperopic excimer laser refractive surgery.Fifteen eyes of 12 patients treated with SCTK for a corneal apical scar after hyperopic excimer laser refractive surgery were retrospectively evaluated (...) . Pachymetry 3 months postoperatively showed no significant reduction during the entire follow-up in either minimum or central thickness.Long-term results demonstrate that SCTK can treat this sight-threatening complication of hyperopic excimer laser refractive surgery, achieving significant improvements in visual acuity and in many corneal morphological parameters. [J Refract Surg. 2018;34(2):113-120.].Copyright 2018, SLACK Incorporated.

2018 Journal of Refractive Surgery

13. Evaluation of femtosecond laser in flap and cap creation in corneal refractive surgery for myopia: a 3-year follow-up (PubMed)

Evaluation of femtosecond laser in flap and cap creation in corneal refractive surgery for myopia: a 3-year follow-up To evaluate femtosecond laser in flap and cap creation, detect some corneal biomechanical changes, and evaluate dry eye after laser in situ keratomileusis (LASIK), Femto-LASIK, and small incision lenticule extraction (SMILE) with 3-year follow-up.Preoperative evaluation taken: full ophthalmic examination, Pentacam, ocular response analyzer, ocular surface disease index (OSDI (...) ), and tear breakup time (TBUT). LASIK flap was created using Moria microkeratome in 30 eyes (LASIK group) and using VisuMax femtosecond laser in 38 eyes (FS-LASIK group) and SMILE was done by VisuMax in 35 eyes (SMILE group). Postoperative evaluation: anterior segment optical coherence tomography to measure flap and cap thickness, ocular response analyzer to measure corneal hysteresis (CH) and corneal resistance factor (CRF), OSDI, and TBUT at 1, 3, 6, 12, 24, and 36 months after surgery.This study

Full Text available with Trip Pro

2018 Clinical ophthalmology (Auckland, N.Z.)

14. Intraocular lens power calculation in eyes with previous corneal refractive surgery (PubMed)

Intraocular lens power calculation in eyes with previous corneal refractive surgery This review aims to explain the reasons why intraocular lens (IOL) power calculation is challenging in eyes with previous corneal refractive surgery and what solutions are currently available to obtain more accurate results.After IOL implantation in eyes with previous LASIK, PRK or RK, a refractive surprise can occur because i) the altered ratio between the anterior and posterior corneal surface makes (...) the keratometric index invalid; ii) the corneal curvature radius is measured out of the optical zone; and iii) the effective lens position is erroneously predicted if such a prediction is based on the post-refractive surgery corneal curvature. Different methods are currently available to obtain the best refractive outcomes in these eyes, even when the perioperative data (i.e. preoperative corneal power and surgically induced refractive change) are not known. In this review, we describe the most accurate

Full Text available with Trip Pro

2018 Eye and Vision

15. Clinical Study to Evaluate the Safety and Effectiveness of the RxSight Light Adjustable Lens (LAL) in Subjects With Prior Corneal Refractive Surgery

Clinical Study to Evaluate the Safety and Effectiveness of the RxSight Light Adjustable Lens (LAL) in Subjects With Prior Corneal Refractive Surgery Clinical Study to Evaluate the Safety and Effectiveness of the RxSight Light Adjustable Lens (LAL) in Subjects With Prior Corneal Refractive Surgery - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved (...) Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Clinical Study to Evaluate the Safety and Effectiveness of the RxSight Light Adjustable Lens (LAL) in Subjects With Prior Corneal Refractive Surgery The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. of clinical

2018 Clinical Trials

16. Comparison of changes in refractive error and corneal curvature following small-incision lenticule extraction and femtosecond laser-assisted in situ keratomileusis surgery (PubMed)

Comparison of changes in refractive error and corneal curvature following small-incision lenticule extraction and femtosecond laser-assisted in situ keratomileusis surgery To compare visual acuity, refractive error, corneal curvature, and the stability of these parameters during the early postoperative period following small-incision lenticule extraction (SMILE) and femtosecond laser-assisted in situ keratomileusis (FS-LASIK) surgery.One hundred and five eyes and 110 eyes were enrolled in SMILE (...) group at 1 day, 1 week, and 1-month follow-up. However, there was no significant difference in postoperative SE values at 3-month follow-up. Significant differences in mean postoperative corneal curvature were observed during all follow-up examinations.SMILE surgery was associated with more accurate postoperative refractive correction up to 1 month following surgery. SMILE surgery also resulted in less significant corneal curvature changes than FS-LASIK. Furthermore, FS-LASIK was associated

Full Text available with Trip Pro

2018 Indian journal of ophthalmology

18. Refractive outcomes after limbal relaxing incisions or femtosecond laser arcuate keratotomy to manage corneal astigmatism at the time of cataract surgery. (PubMed)

Refractive outcomes after limbal relaxing incisions or femtosecond laser arcuate keratotomy to manage corneal astigmatism at the time of cataract surgery. To compare the results of manual limbal relaxing incisions (LRIs) performed during conventional phacoemulsification surgery with those of nonpenetrating femtosecond laser arcuate keratotomies performed during femtosecond laser-assisted cataract surgery to manage corneal astigmatism.Guy's and St. Thomas' NHS Foundation Trust, London, United (...) Kingdom.Randomized case-controlled trial.This was a secondary outcome of a randomized controlled trial comparing 400 patients treated with conventional phacoemulsification surgery or femtosecond laser-assisted cataract surgery. All patients with corneal astigmatism greater than 0.9 diopter (D) were offered LRIs or femtosecond laser arcuate keratotomy based on the original randomization. Visual acuity, postoperative refraction, and corneal topography were recorded 4 weeks postoperatively. Vector analysis

2018 Journal of cataract and refractive surgery

19. Corneal Surface Ablation Laser Refractive Surgery for the Correction of Myopia: A Network Meta-analysis. (PubMed)

Corneal Surface Ablation Laser Refractive Surgery for the Correction of Myopia: A Network Meta-analysis. To systematically compare the efficacy, predictability, safety, postoperative haze, pain scores, and epithelial healing time of four corneal surface ablation procedures.PubMed, Embase, Cochrane Library, and the U.S. trial registry were searched up to June 2018. Randomized controlled trials were selected. Efficacy (uncorrected distance visual acuity of 20/20 or better), predictability (...) epithelial keratomileusis (LASEK) ranked highest for efficacy, predictability, safety, and day 1 pain scores. Epi-LASIK ranked best for grade 1 haze scores. T-PRK ranked best for haze of 0.5 or higher, haze scores day 3 pain scores, and epithelial healing time.Surface laser refractive surgeries are comparable in terms of efficacy, predictability, safety, and postoperative haze except for day 3 pain scores, with epi-LASIK being more painful compared to PRK and T-PRK. [J Refract Surg. 2018;34(11):726-735

Full Text available with Trip Pro

2018 Journal of Refractive Surgery

20. Multifocal intraocular lens implantation after previous hyperopic corneal refractive laser surgery. (PubMed)

Multifocal intraocular lens implantation after previous hyperopic corneal refractive laser surgery. To describe the outcomes in terms of the refraction and visual acuity of multifocal intraocular lens (IOL) implantation in patients with previous hyperopic corneal refractive laser surgery.Academic Medical Center, University of Amsterdam, Amsterdam, and Retina Total Eye Care, Driebergen, the Netherlands.Retrospective case series.Results were analyzed 3 months after implantation of a multifocal (...) IOL (Acrysof Restor SN6AD1) in patients after previous corneal refractive laser surgery for hyperopia. The primary outcome measures were uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and refraction. The secondary outcome measures were the number of laser enhancements and posterior capsule opacification (PCO) rates.Forty eyes of 40 patients were included. Sixteen eyes (40.0%) had lens extraction because of cataract, and 24 eyes (60.0%) had refractive lens

2018 Journal of cataract and refractive surgery

To help you find the content you need quickly, you can filter your results via the categories on the right-hand side >>>>