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Uncorrected refractive error

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https://www.readbyqxmd.com/read/27930796/surgical-correction-of-presbyopic-ametropia-with-non-refractive-transparent-corneal-inlay-and-an-implantable-collamer-lens
#1
Carlos Gutierrez Amoros
PURPOSE: To report the clinical outcomes of two patients implanted with the Raindrop Near Vision Inlay (ReVision Optics, Inc., Lake Forest, CA) to correct for presbyopia and the Visian implantable collamer lens (ICL) (STAAR Surgical, Monrovia, CA) to correct refractive error. METHODS: Case report. RESULTS: Two patients with presbyopic ametropia complained of blurred vision for distance and near. Both patients received a corneal inlay in the non-dominant eye followed by the Raindrop Inlay the following day...
December 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27918589/outcomes-of-cataract-surgery-in-urban-and-rural-population-in-the-south-indian-state-of-andhra-pradesh-rapid-assessment-of-visual-impairment-ravi-project
#2
Srinivas Marmamula, Rohit C Khanna, Konegari Shekhar, Gullapalli N Rao
OBJECTIVE: To assess the visual outcomes after cataract surgery among urban and rural population aged ≥40 years in the South India state of Andhra Pradesh. METHODS: A population based cross-sectional study was conducted in which 7800 subjects were sampled from two rural and one urban location. Visual Acuity was assessed and eye examination were performed by trained personnel. A questionnaire was used to collect personal and demographic information, and history of cataract surgery...
2016: PloS One
https://www.readbyqxmd.com/read/27893524/visual-outcomes-after-smile-lasek-and-lasek-combined-with-corneal-collagen-cross-linking-for-high-myopic-correction
#3
Sangyoon Hyun, Seongjun Lee, Jae-Hyung Kim
PURPOSE: To compare the visual and refractive outcomes of small-incision lenticule extraction (SMILE), laser-assisted subepithelial keratomileusis (LASEK), and LASEK combined with corneal collagen cross-linking (LASEK-CXL) surgery for high-degree myopia. METHODS: Medical records of patients with spherical equivalent (SE) greater than -6.00 diopters (D) treated with SMILE, LASEK, and LASEK-CXL were reviewed. Uncorrected distance visual acuity (UCVA), SE, and corneal haze were followed up in the 3 groups for 6 months...
November 23, 2016: Cornea
https://www.readbyqxmd.com/read/27893092/global-patterns-in-health-burden-of-uncorrected-refractive-error
#4
Lixia Lou, Chunlei Yao, Yanhua Jin, Victor Perez, Juan Ye
Purpose: To evaluate the global patterns in health burden of uncorrected refractive error (URE) by year, age and sex, region, and socioeconomic status, using disability-adjusted life years (DALYs). Methods: Global, regional, or national DALY numbers, crude DALY rates, and age-standardized DALY rates caused by URE, by year, or age and sex, were obtained from the Global Burden of Disease Study 2013. Human development index (HDI) in 2013 as a national socioeconomic indicator was obtained from the Human Development Report...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27865728/the-prevalence-and-demographic-associations-of-presenting-near-vision-impairment-among-adults-living-in-the-united-states
#5
Nazlee Zebardast, David S Friedman, Susan Vitale
PURPOSE: Estimate prevalence of presenting near-vision impairment (PNVI) among people =50years in the United States (US) and examine associations with socio-demographic characteristics. DESIGN: Cross-sectional study METHODS: 11016 of 12781 (88.5%) US adults =50 years participated in the National Health and Nutrition Examination Survey (NHANES) between 1999-2008 with recorded near visual acuity. PNVI was defined as presenting near-vision worse than 20/40; functional near-vision impairment (FNVI) was defined as at least "moderate-difficulty" with either reading newsprint or near-work...
November 16, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27843292/topography-modified-refraction-tmr-adjustment-of-treated-cylinder-amount-and-axis-to-the-topography-versus-standard-clinical-refraction-in-myopic-topography-guided-lasik
#6
Anastasios John Kanellopoulos
PURPOSE: To evaluate the safety, efficacy, and contralateral eye comparison of topography-guided myopic LASIK with two different refraction treatment strategies. SETTING: Private clinical ophthalmology practice. PATIENTS AND METHODS: A total of 100 eyes (50 patients) in consecutive cases of myopic topography-guided LASIK procedures with the same refractive platform (FS200 femtosecond and EX500 excimer lasers) were randomized for treatment as follows: one eye with the standard clinical refraction (group A) and the contralateral eye with the topographic astigmatic power and axis (topography-modified treatment refraction; group B)...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27830202/comparison-of-the-visual-acuity-after-photorefractive-keratectomy-using-early-treatment-diabetic-retinopathy-study-chart-and-e-chart
#7
Saeedeh Ghorbanhosseini, Hassan Hashemi, Ebrahim Jafarzadehpur, Abbasali Yekta, Mehdi Khabazkhoob
PURPOSE: To compare the visual responses of post refractive surgery's patients using Early Treatment Diabetic Retinopathy Study Chart (ETDRS) and E-chart with and without color filters. METHODS: The uncorrected Logarithm of the Minimum Angle of Resolution Visual Acuity (LogMAR VA) of 70 patients with a mean age of 26.2 ± 3.76 years (from 19 to 34 years) who had undergone Photorefractive Keratectomy (PRK) (the range of post operation refractive error: ±0.5 D) was measured under the light conditions of with and without asymmetrical glare by using red, green, and yellow filters and ETDRS chart and E-chart...
December 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27824384/refractive-lenticule-transplantation-for-correction-of-iatrogenic-hyperopia-and-high-astigmatism-after-lasik
#8
Apostolos Lazaridis, Dan Z Reinstein, Timothy J Archer, Stephan Schulze, Walter Sekundo
PURPOSE: To design a technique for intrastromal transplantation of stromal lenticules with specific refractive power for correction of post-LASIK induced hyperopia and astigmatism. METHODS: A 28-year-old patient was referred for consultation after complicated LASIK for moderate myopia and astigmatism. The refractive error of the right eye was severely overcorrected due to data entry error. Post-LASIK refraction showed high astigmatism (right eye: +6.50 -9.00 @ 84°) and corrected distance visual acuity (CDVA) of 20/32...
November 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27803858/implantable-collamer-lens-for-residual-refractive-error-after-corneal-refractive-surgery
#9
Xun Chen, Xiao-Ying Wang, Xi Zhang, Zhi Chen, Xing-Tao Zhou
AIM: To assess the safety, efficacy, predictability and stability of implantable collamer lens (ICL) for residual refractive error after corneal refractive surgery. METHODS: This study evaluated 19 eyes of 12 patients who underwent ICL implantation after corneal refractive surgeries. They were followed up for 1y to 5y of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refractive error, flat and steep K value, axial length, intraocular pressure, corneal endothelial cell density, adverse events after ICL surgery...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27777827/quantitative-evaluation-of-microdistortions-in-bowman-s-layer-and-corneal-deformation-after-small-incision-lenticule-extraction
#10
Rushad Shroff, Mathew Francis, Natasha Pahuja, Leio Veeboy, Rohit Shetty, Abhijit Sinha Roy
PURPOSE: To quantitatively evaluate microdistortions in Bowman's layer and change in corneal stiffness after small incision lenticule extraction (SMILE). METHODS: This was a prospective, longitudinal, and interventional study. Thirty eyes of 30 patients were screened preoperatively and underwent SMILE for treatment of myopia with astigmatism. Visual acuity, refraction, optical coherence tomography (OCT; Bioptigen, Inc., Morrisville, NC) imaging of the layer and air-puff applanation (Corvis-ST, OCULUS Optikgeräte Gmbh, Germany) was performed before and after surgery (1 day, 1 week, and 1 month)...
October 2016: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/27722762/small-incision-lenticule-extraction-smile-as-re-treatment-for-a-thick-lasik-flap
#11
Sara Catalan-Lopez, Alba Mariña Portas-Ferradas, Luis Cadarso-Suarez, Adriana Rodriguez-Rodriguez
PURPOSE: To report the case of a residual refractive error after LASIK for moderate myopia successfully re-treated several years later using the small incision lenticule extraction (SMILE) technique. METHODS: Case report. RESULTS: Following LASIK, the patient showed a central flap thickness of 269 microns, whereas residual stromal bed thickness under the flap was 210 microns. SMILE was performed within the flap. In this less invasive surgical procedure, the residual stromal bed is not manipulated and ablation is conducted on the existing flap...
October 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27699605/femtosecond-laser-assisted-lasik-versus-prk-for-high-myopia-comparison-of-18-month-visual-acuity-and-quality
#12
Hassan Hashemi, Reza Ghaffari, Mohammad Miraftab, Soheila Asgari
PURPOSE: To compare 18-month outcomes between femtosecond laser-assisted LASIK (femto-LASIK) and photorefractive keratectomy with mitomycin-C (PRK-MMC) for myopia of more than 7.0 D in terms of visual acuity and quality. METHODS: In this comparative nonrandomized clinical trial, 60 eyes from 30 patients (30 eyes in each group) were enrolled. The two procedures were compared in terms of 18-month changes in uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent, ocular and corneal higher order aberrations (HOAs), and contrast sensitivity (CS)...
October 3, 2016: International Ophthalmology
https://www.readbyqxmd.com/read/27681455/management-of-pseudophakic-myopic-anisometropic-amblyopia-with-piggyback-visian-%C3%A2-implantable-collamer-lens
#13
Sherif A Eissa
PURPOSE: To assess the outcomes of sulcus implantation of the Visian(®) implantable collamer lens (ICL) to correct pseudophakic myopic anisometropic amblyopia with myopic shift and/or primary refractive overcorrection. METHODS: Prospective case series enrolled 14 pseudophakic eyes of 14 patients, 5-9 years old, with history of cataract surgery and primary in the bag-intraocular lenses (IOL) implantation, followed by myopic shift and/or refractive overcorrection and anisometropic amblyopia of variable degrees...
September 29, 2016: Acta Ophthalmologica
https://www.readbyqxmd.com/read/27640004/refractive-errors-and-amblyopia-in-the-ucla-preschool-vision-program-first-year-results
#14
Karen Hendler, Shiva Mehravaran, Xiang Lu, Stuart I Brown, Bartly J Mondino, Anne L Coleman
PURPOSE: To report the outcomes of full ophthalmic examination for preschool children in LA County who failed screening with the Retinomax Autorefractor. DESIGN: Retrospective, cross-sectional study. METHODS: Between August 2012 and May 2013, the University of California Los Angeles (UCLA) preschool vision program screened 11 260 preschool children aged 3-5 years in Los Angeles County using the Retinomax Autorefractor only. Of those, 1007 children who failed the screening were examined by an ophthalmologist on the UCLA Mobile Eye Clinic...
December 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27617868/predictability-and-vector-analysis-of-laser-in-situ-keratomileusis-for-residual-errors-in-eyes-implanted-with-different-multifocal-intraocular-lenses
#15
Marcony R Santhiago, Bruna V Ventura, Ramon C Ghanem, Newton Kara-Junior, Haroldo V Moraes, Emir Ghanem
PURPOSE: To investigate potential differences in predictability, efficacy, and safety of corneal excimer laser to correct residual myopia, hyperopia, and astigmatism in eyes previously implanted with multifocal intraocular lenses using distinct optical surfaces and platforms for multifocality. METHODS: This prospective comparative study included 37 eyes submitted to laser in situ keratomileusis correction for residual errors after implantation of either an apodized diffractive-refractive (Restor) or a full-diffractive (Tecnis) multifocal intraocular lens...
November 2016: Cornea
https://www.readbyqxmd.com/read/27602074/combining-corneal-crosslinking-and-phakic-toric-implantable-collamer-lenses-for-the-treatment-of-keratectasia-a-case-report
#16
Xiao Zhang, Xiang-Chen Tao, Zhi-Wei Li, Wei-Yan Zhou, Ping Ma, Chun-Xiao Zhang, Yu-Meng Wang, Guo-Ying Mu
The present study reports the use of a phakic toric Implantable Collamer Lens (ICL) that improved the refraction correction of high myopia and astigmatism in a case of keratectasia following corneal cross-linking. A 31-year-old male was diagnosed with keratectasia 12 years after laser-assisted in situ keratomileusis (LASIK). Following LASIK, the manifest refraction was -3.50-2.25×90 [0.1 logarithmic expression (LogMAR) best corrected visual acuity (BVCA)] in the right eye and -8.00-3.50×175 (0.3 LogMAR BCVA) in the left eye, with a LogMAR uncorrected distance visual acuity (UDVA) of 0...
September 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27601090/early-outcomes-after-small-incision-lenticule-extraction-and-photorefractive-keratectomy-for-correction-of-high-myopia
#17
Tommy C Y Chan, Marco C Y Yu, Alex Ng, Zheng Wang, George P M Cheng, Vishal Jhanji
We prospectively compared visual and refractive outcomes in patients with high myopia and myopic astigmatism after small-incision lenticule extraction (SMILE) and photorefractive keratetctomy (PRK) with mitomycin C. Sixty-six eyes of 33 patients (mean age, 29.7 ± 5.6 years) were included (SMILE: 34 eyes, PRK 32 eyes). Preoperatively, no significant difference was noted in manifest spherical equivalent (p = 0.326), manifest sphere (p = 0.277), and manifest cylinder (p = 0.625) between both groups...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27575506/epidemiologic-study-of-myopia-in-a-population-of-schoolchildren-in-tunisia
#18
Ahmed Chebil, Lina Jedidi, Nibrass Chaker, Fedra Kort, Leila Largueche, Leila El Matri
BACKGROUND: Uncorrected refractive error has recently been identified as the leading cause of visual impairment in children worldwide. The prevalence of myopia is increasing. Determination of the epidemiology of myopia is important to develop screening strategy. PURPOSE: to estimate the prevalence and the degree of severity of myopia among primary schoolchildren in Tunisia and to assess its effect on school performance. METHODS: A random cluster design was used to recruit children from primary schools across urban and rural settings in Tunisia, during 2009 to 2012...
March 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/27563677/outcomes-of-a-management-strategy-in-eyes-with-corneal-irregularity-and-cataract
#19
Mathew Kurian Kummelil, Rohit Shetty, Luci Kaweri, Shama Shaligram, Mukesh Paryani
Purpose. To evaluate the outcomes of a management strategy in patients with irregular corneas and cataract. Methods. Six eyes of four patients presented for cataract surgery with irregular corneas following corneal refractive surgery. Topoguided ablation regularised the cornea, followed by phacoemulsification and intraocular lens implantation. Zonal keratometric coefficient of variation (ZKCV) measured structural changes and visual quality metrics measured functional improvement. Results. The mean duration after corneal refractive surgery was 7...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27538796/efficacy-and-safety-of-femtosecond-laser-assisted-cataract-surgery-compared-with-manual-cataract-surgery-a-meta-analysis-of-14%C3%A2-567-eyes
#20
Marko Popovic, Xavier Campos-Möller, Matthew B Schlenker, Iqbal Ike K Ahmed
TOPIC: To investigate the efficacy and safety of femtosecond laser-assisted cataract surgery (FLACS) relative to manual cataract surgery (MCS). CLINICAL RELEVANCE: It is unclear whether FLACS is more efficacious and safe relative to MCS. METHODS: A literature search of MEDLINE, EMBASE, and Scopus from 2007 to March 2016 was conducted. Studies containing both FLACS and MCS arms that reported on relevant efficacy and/or safety parameters were included...
October 2016: Ophthalmology
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