The purpose of this study was to characterize the central and peripheral refraction across horizontal meridian visual field before after myopic corneal refractive therapy (CRT) with contact lenses.Twenty-eight right eyes from 28 subjects (mean age +/- SD = 24.6 6.3 years) were fitted Paragon CRT lenses treat myopia between -0.88 -5.25 D spherical equivalent. Along a complete set examination procedures assess suitability for treatment, refractions measured along up 35 degrees eccentricity in...

Abstract The aim of this study was to evaluate the accuracy measurement intraocular pressure (IOP) using a new induction/impact rebound tonometer (ICare®) in comparison with Goldmann applanation (AT). left eyes 46 university students were assessed two tonometers, induction tonometry being performed first. ICare® handled by an optometrist and ophthalmologist. In study, statistically significant differences found when comparing (AT) ( p < 0.05). mean difference between tonometers 1.34 ±...

To compare visual performance with the Biofinity multifocal (MF) contact lens monovision (MV) single-vision lens.A crossover study of 20 presbyopic patients was conducted. Patients were randomized first into either an MF or MV for 15 days each modality, a washout period between type. Measurements included monocular and binocular high- low-contrast logarithm minimum angle resolution acuity (VA) at distance near visions, contrast sensitivity function, stereoacuity.At days, lost fewer than two...

To compare the central postoperative vault of a phakic intraocular lens (pIOL) to correct myopia, myopic astigmatism, and hyperopia identify ocular parameters that might predict amount.Fernández-Vega Ophthalmological Institute, Oviedo, Spain.Cohort study.Three months after implantation Implantable Collamer Lens pIOLs hyperopia, was measured using optical coherence tomography. Patients were divided into groups according preoperative anterior chamber depth (ACD) effects ACD, white-to-white...

Purpose To compare the patterns of relative peripheral astigmatic refraction (tangential and sagittal power errors) eccentric eye length between progressing stable young-adult myopes. Methods Sixty-two right eyes 62 white patients participated in study, which 30 were nonprogressing myopes (NP group) for last 2 years 32 (P group). Groups matched mean spherical refraction, axial length, age. Peripheral measured along horizontal meridian up to 35 degrees eccentricity, respectively. Results...

Purpose To evaluate different aspects of the visual-related quality life using National Eye Institute Refractive Error Quality Life (NEI RQL)-42 questionnaire in low and moderate myopic subjects corrected with refractive treatments including laser-assisted situ keratomileusis (LASIK), orthokeratology (OK), soft contact lenses (SCLs), spectacles. Methods The NEI RQL-42 was administered to 217 at one single clinic. All questions consisted 13 subscales that were analyzed separately. results...

The aim of this study was to investigate the changes in refractive, biometric and topographic ocular parameters among university students Portugal during a 3-year period.A longitudinal comprised 118 Portuguese from School Science (34 males 84 females; mean age 20.6 +/- 2.3 years). Ocular refraction, corneal curvature (CR) eccentricity, A-scan biometry were conducted under cycloplegia. sphero-cylindrical refractive results converted into vector representations (M, J(0) J(45)) for statistical...

To investigate the biomechanical properties of normal cornea, and correlate them with central peripheral corneal thickness age.Seventy-six right eyes volunteers were measured Ocular Response Analyzer (ORA), ICare rebound tonometry an ultrasound pachymeter at center 4 mm from in nasal temporal directions.ICare readings significantly correlated properties. Corneal resistance factor was parameter higher correlation intraocular pressure (IOP) values. Goldmann equivalent IOP obtained ORA for...

Purpose: To study the short-term corneal response to refractive therapy for myopia and correlate it with biomechanical properties as measured ocular analyzer. Methods: Eight eyes from 8 young subjects were fitted a reverse geometry contact lens, attempting myopic correction of −4.00 D. Corneal resistance factor hysteresis (CH) before lens fitting These parameters correlated degree change in apical curvature, simulated keratometry, central thickness after 3 hours wear (effect) removal...

Clinical relevance Accurate measurement of refractive errors is essential for vision correction. Understanding the strengths and limitations different techniques crucial clinical practice, particularly in managing patients with complex conditions.

The purpose of this study was to compare refractions measured with an autorefractor and by retinoscopy without cycloplegia. objective were performed in 199 right eyes from healthy young adults a mean age 21.6 +/- 2.66 years. measurements first cycloplegia repeated 30 min later Data analysed using Fourier decomposition the power profile. More negative values component M J(0) given non-cycloplegic autorefraction compared cycloplegic (p < 0.0001). However more positive for J(45) vector...

To compare refractive values measured with and without cycloplegia, or fogging lenses, using an open-field auto-refractor.One hundred forty-two young adults were enrolled from a university population; 96 female (67.6%) 46 male (32.4%), the age range was 18-26 years (mean 22.3 +/- 3.7 years). The refraction measurement obtained for right eye of each subject Grand Seiko Auto Ref/Keratometer WAM-5500 (GS) under three conditions, always in this sequence: (1) cycloplegia (GS), (2) but + 2.00 D...

The purpose of this study was to assess the changes in curvature along horizontal meridian anterior cornea occurring after refractive surgery and corneal therapy (CRT).One hundred twenty-two eyes 122 patients (70 female) with a mean (SD) age 30.6 +/- 7.5 years were retrospectively analyzed study. Forty-three those underwent standard laser situ keratomileusis (LASIK) ablation, 40 had customized LASIK 39 CRT orthokeratology lenses. Patients different groups matched be comparable terms...

To quantify the changes in elevation topography of front and back corneal surfaces after three different refractive treatments for correcting myopia with standard custom laser situ keratomileusis (LASIK) orthokeratology using therapy.We evaluated 20 eyes undergoing correction spherical equivalent (mean±SD=-3.41±0.76 D), 18 LASIK surgery (mean±SD=-4.14±0.89 23 (mean±SD=-3.61±0.67 D). The values were derived by Pentacam (Oculus, Inc. GmbH, Wetzlar, Germany) before at least 3 months each...

The aim of this study was to investigate static and dynamic visual acuity, refractive error, the use compensation elite football players.From 2015 2017, 147 professional players from five teams were analysed. Screening consisted a survey about correction, measurement acuity acuity. Refractive error assessed using an autorefractor. Distance evaluated Snellen chart. Dynamic measured at metres software COI-SV. All athletes male with mean age 24.6 ± 4.1 years.The -0.04 0.83 D, 16.4 per cent...

Abstract The aim of the present study was to assess level accuracy for measurements intra‐ocular pressure (IOP) obtained with a new non‐contact tonometer (NCT) Reichert AT550 ® . Measurements were compared against those Xpert Plus, Goldmann applanation and Perkins tonometer. Thirty‐five university students assessed four tonometers in randomised order, tonometry performed first. Each measurement devices had its own trained clinical observer. Plots differences IOP as function mean each pair...

PURPOSE: To assess the safety, efficacy, stability, and predictability after implantation of a toric intraocular copolymer (Collamer) lens (pIOL) to correct high myopic astigmatism. SETTING: Fernández-Vega Ophthalmological Institute, Oviedo, Spain. METHODS: This study evaluated eyes that had pIOL. Outcome measures were uncorrected (UDVA) corrected (CDVA) distance visual acuities (Snellen decimal), refraction, postoperative complications. RESULTS: The included 15 12 patients (9 women)....

The purpose of this study was to show the potential a commercial center-distance multifocal soft contact lens induce relative peripheral myopic defocus in eyes. Twenty-eight right eyes from 28 patients (mean age: 22.0 ± 2.0 years) were evaluated. measurements axial and off-axis refraction made using Grand-Seiko WAM-5500 open-field autorefractometer without with lenses (Proclear Multifocal D® Design) +2.00 D +3.00 add power applied randomly. Central mean spherical equivalent −2.24 1.33 D....

<b>Aim:</b> To evaluate the influence of age on measurements and relationships among central peripheral intraocular pressure (IOP) readings taken with a rebound tonometer. <b>Methods:</b> The IOPs were measured using ICare tonometer right eyes 217 patients (88 men 129 women) aged 18–85 years (mean 45.9 (SD 19.8) years), at centre 2 mm from nasal temporal limbus along horizontal meridian. Three groups established: young (⩽30 old; n = 75), middle (31–60 77) old (&gt;60 65). <b>Results:</b> A...

Clinical relevance In many sports, dynamic visual acuity is used. order to improve acuity, it important understand the aspects of system that can cause compromise.