642 results match your criteria refraction monocular

Effect of residual astigmatism on uncorrected visual acuity and patient satisfaction in pseudophakic patients.

J Cataract Refract Surg 2021 Aug;47(8):991-998

From the Department of Ophthalmology, University of California, San Francisco, San Francisco, California (S.C. Schallhorn, J.M. Schallhorn); Optical Express, Glasgow, United Kingdom (S.C. Schallhorn, Hettinger, Pelouskova, Teenan, Venter, Hannan); Carl Zeiss Meditec, Inc., Dublin, California (S.C. Schallhorn); F.I. Proctor Foundation, University of California, San Francisco, San Francisco, California (J.M. Schallhorn).

Purpose: To evaluate the effect of residual astigmatism on postoperative visual acuity and satisfaction after intraocular lens (IOL) surgery.

Setting: Private practice, United Kingdom.

Design: Retrospective case series. Read More

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Visual outcomes and safety of the TECNIS Symfony intraocular lens: results of a pivotal clinical trial.

J Cataract Refract Surg 2021 Jul 13. Epub 2021 Jul 13.

Empire Eye and Laser Center, Bakersfield, CA Johnson & Johnson Surgical Vision, Inc., Santa Ana, CA Jones Eye Clinic, Sioux City, IA Scott & Christie and Associates, PC, Cranberry Township, PA.

Purpose: To compare the effectiveness and safety of the TECNIS Symfony® intraocular lens (IOL; ZXR00) with the TECNIS® 1-piece monofocal IOL (ZCB00).

Setting: Fifteen sites in the United States.

Design: Prospective, randomized, subject/evaluator-masked clinical trial. Read More

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Intravitreal brimonidine inhibits form-deprivation myopia in guinea pigs.

Eye Vis (Lond) 2021 Jul 14;8(1):27. Epub 2021 Jul 14.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China.

Background: The use of ocular hypotensive drugs has been reported to attenuate myopia progression. This study explores whether brimonidine can slow myopia progression in the guinea pig form-deprivation (FD) model.

Methods: Three-week-old pigmented male guinea pigs (Cavia porcellus) underwent monocular FD and were treated with 3 different methods of brimonidine administration (eye drops, subconjunctival or intravitreal injections). Read More

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Clinical outcomes of a diffractive trifocal intraocular lens with femtosecond laser, digital tracking, and intraoperative aberrometry.

Can J Ophthalmol 2021 Jun 23. Epub 2021 Jun 23.

Sengi, Penniac, N.B.. Electronic address:

Objective: To evaluate clinical outcomes of a trifocal intraocular lens using femtosecond laser-assisted cataract surgery (FLACS), digital tracking (DT), and intraoperative aberrometry (IA).

Setting: One site (Abbotsford, B.C. Read More

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One-Year Outcomes in a Large Series of Patients Following Implantation of an Extended Depth of Focus Intraocular Lens.

J Refract Surg 2021 Jun 1;37(6):380-388. Epub 2021 Jun 1.

Purpose: To evaluate clinical outcomes 1 year after implantation of an extended depth of focus intraocular lens (IOL) in a large series of patients.

Methods: Outcomes of patients who underwent refractive lens exchange or cataract surgery with the implantation of the AT LARA 829MP IOL (Carl Zeiss Meditec AG) were retrospectively reviewed. The near (40 cm), intermediate (66 cm), and distance visual acuity, refractive outcomes, and cumulative rate of adverse events and secondary procedures were evaluated at 12 months postoperatively. Read More

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Investigation of the Accuracy of a Low-Cost, Portable Autorefractor to Provide Well-Tolerated Eyeglass Prescriptions: A Randomized Crossover Trial.

Ophthalmology 2021 Jun 7. Epub 2021 Jun 7.

Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts. Electronic address:

Purpose: To compare patient preferences for eyeglasses prescribed using a low-cost, portable wavefront autorefractor versus standard subjective refraction (SR).

Design: Randomized, cross-over clinical trial.

Participants: Patients aged 18 to 40 years presenting with refractive errors (REs) to a tertiary eye hospital in Southern India. Read More

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Comparison between Plusoptix A09 and gold standard cycloplegic refraction in preschool children and agreement to detect refractive amblyogenic risk factors.

Oman J Ophthalmol 2021 Jan-Apr;14(1):14-19. Epub 2021 Feb 27.

Department of Ophthalmology, Dr. D. Y. Patil Medical College Hospital, Pune, Maharashtra, India.

Background: The preschool children hardly complain about their vision problems. It is of paramount importance to screen them with an objective tool and compare with the gold standard technique.

Aim: To compare the values obtained with Plusoptix A09 and cycloplegic refraction in 3-6 years children and agreement to detect refractive amblyogenic risk factors. Read More

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February 2021

Comparative analysis of visual outcome with three intraocular lenses: monofocal, enhanced monofocal, and extended range of vision.

J Cataract Refract Surg 2021 May 26. Epub 2021 May 26.

Department of Ophthalmology, Vita-Salute University, IRCCS San Raffaele Scientific Institute, Milan, Italy.

Purpose: To compare the visual performance, spectacle independence and subjective visual quality of three intraocular lenses (IOLs): monofocal, enhanced monofocal, and extended range of vision.

Setting: Ophthalmology Department, San Raffaele Scientific Institute, Milan, Italy.

Design: Prospective case series. Read More

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Long-Term Evaluation of Visual Outcomes and Patient Satisfaction after Binocular Implantation of a Bioanalogic Lens.

J Ophthalmol 2021 7;2021:5572384. Epub 2021 May 7.

Departament of Ophthalmology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice 40055, Poland.

Purpose: Long-term evaluation of the visual refractive outcomes and the quality of life after implantation of the WIOL-CF (Medicem, Czech Republic) in both eyes.

Design: retrospective, nonrandomized noncomparative case series.

Methods: 50 eyes of 25 patients, including 11 women (44%) and 14 men (56%). Read More

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The long-term observation in Chinese children with monocular myelinated retinal nerve fibers, myopia and amblyopia.

Transl Pediatr 2021 Apr;10(4):860-869

Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China.

Background: The syndrome of monocular myelinated retinal nerve fibers (MRNF), myopia and amblyopia threatens visual development of infants and young children. The efficacy of part-time occlusion therapy remains controversial, and the long-term prognosis of the syndrome remains unclear.

Methods: Ten children (4. Read More

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Early clinical outcomes and comparison between trans-PRK and PRK, regarding refractive outcome, wound healing, pain intensity and visual recovery time in a real-world setup.

Harald C Gaeckle

BMC Ophthalmol 2021 Apr 16;21(1):181. Epub 2021 Apr 16.

Augenlaserzentrum Neu-Ulm, Edisonallee 19, 89231, Neu-Ulm, Germany.

Purpose: To compare early clinical outcomes of single-step transepithelial photorefractive keratectomy (tPRK) and photorefractive keratectomy (PRK) regarding refractive outcome, visual acuity, wound healing, pain intensity and visual recovery time.d.

Methods: In this prospective clinical observational study 200 eyes of 100 consecutive patients with mild to moderate myopia with or without mild astigmatism were included. Read More

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Visual outcomes in hyperopic myopic and emmetropic patients with customized aspheric ablation (Q factor) and micro-monovision.

Int Ophthalmol 2021 Jun 16;41(6):2179-2185. Epub 2021 Mar 16.

Department of Ophthalmology, Facultad de Medicina, School of Medicine, Universidad Nacional de Colombia, Carrera 30 Calle 45, Bogota DC, Colombia.

Purpose: To evaluate the visual outcomes, visual performance, and stereoacuity in presbyopic patients following treatment by a change in the corneal asphericity and micro-monovision.

Methods: Presbyopic patients with diverse refractive errors and emmetropes (n = 30 eyes) were treated with a custom Q-ablation profile and micro-monovision in the non-dominant eye. There with a difference of Q - 0. Read More

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Tree shrews do not maintain emmetropia in initially-focused narrow-band cyan light.

Exp Eye Res 2021 May 10;206:108525. Epub 2021 Mar 10.

Dept. of Optometry and Vision Science, University of Alabama at Birmingham (UAB), 1716 University Blvd., Birmingham, AL, United States. Electronic address:

We asked if emmetropia, achieved in broadband colony lighting, is maintained in narrow-band cyan light that is well focused in the emmetropic eye, but does not allow for guidance from longitudinal chromatic aberrations (LCA) and offers minimal perceptual color cues. In addition, we examined the response to a -5 D lens in this lighting. Seven tree shrews from different litters were initially housed in broad-spectrum colony lighting. Read More

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"Double Prosthesis Implantation": Biometry and Refractive Outcomes in Combined Intraocular Lens and Artificial Iris Surgery.

Clin Ophthalmol 2021 24;15:799-805. Epub 2021 Feb 24.

Department of Ophthalmology, University Hospital Heidelberg, University of Heidelberg, Heidelberg, Germany.

Purpose: To assess the biometry and postoperative refraction in iris repair using ArtificialIris in combination with an intraocular lens (IOL).

Setting: Department of Ophthalmology, University Hospital Heidelberg, University of Heidelberg, Germany.

Design: Retrospective observational study. Read More

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February 2021

Quality of Vision Following LASIK and PRK-MMC for Treatment of Myopia.

Mil Med 2021 Feb 25. Epub 2021 Feb 25.

Navy Refractive Surgery Center, Naval Medical Center San Diego, San Diego, CA 92134, USA.

Introduction: Femtosecond-assisted thin flap, laser-assisted in situ keratomileusis (LASIK) and photorefractive keratectomy with mitomycin-C (PRK-MMC) are the two most common refractive surgical procedures used to enhance visual capability in the U.S military. The purposes of the study were to examine effects on quality of vision following LASIK and PRK-MMC using a novel computer-based quick contrast sensitivity function (qCSF) test. Read More

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February 2021

Is accommodation a confounder in pupillometry research?

Biol Psychol 2021 03 10;160:108046. Epub 2021 Feb 10.

Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, the Netherlands.

Much psychological research uses pupil diameter measurements to investigate the cognitive and emotional effects of visual stimuli. A potential problem is that accommodating at a nearby point causes the pupil to constrict. This study examined to what extent accommodation is a confounder in pupillometry research. Read More

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Prospective study to compare axial position stability after fellow-eye implantation of 2 distinct intraocular lens designs.

J Cataract Refract Surg 2021 Aug;47(8):999-1005

From the Vienna Institute for Research in Ocular Surgery (VIROS), A Karl Landsteiner Institute, Department of Ophthalmology, Hanusch Hospital, Vienna, Austria.

Purpose: To compare the dynamics of axial intraocular lens (IOL) position and stability in the capsular bag after fellow-eye implantation of a 1-piece C-loop and a 4-point haptic IOL.

Setting: Hanusch Hospital, Vienna.

Design: Prospective, comparative, randomized bilateral study. Read More

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Co-existence of myopia and amblyopia in a guinea pig model with monocular form deprivation.

Ann Transl Med 2021 Jan;9(2):110

Clinical College of Ophthalmology, Tianjin Medical University, Tianjin, China.

Background: Form deprivation myopia is a type of ametropia, with identifiable causes in humans, that has been induced in many animals. The age of onset of myopia induced by monocular form deprivation coincides with the period of visual development in guinea pigs. However, visual acuity of form-deprived eyes in guinea pigs is not understood yet. Read More

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January 2021

Clinical Outcomes After Bilateral Implantation of a Trifocal Presbyopia-Correcting Intraocular Lens in an Indian Population.

Clin Ophthalmol 2021 22;15:213-225. Epub 2021 Jan 22.

Medical Research Foundation, Chennai, Tamil Nadu, India.

Purpose: To evaluate the effectiveness and safety of a presbyopia-correcting trifocal intraocular lens (IOL), AcrySof IQ PanOptix (TFNT00), in an Indian population.

Patients And Methods: This prospective, multicenter, observational, single-arm, post-marketing study included 67 patients undergoing cataract surgery with bilateral implantation of TFNT00 across five Indian sites. Postoperative outcomes were assessed at 3 months after second eye surgery. Read More

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January 2021

Ambient Light Regulates Retinal Dopamine Signaling and Myopia Susceptibility.

Invest Ophthalmol Vis Sci 2021 01;62(1):28

Department of Neuroscience, Emory University, Atlanta, Georgia, United States.

Purpose: Exposure to high-intensity or outdoor lighting has been shown to decrease the severity of myopia in both human epidemiological studies and animal models. Currently, it is not fully understood how light interacts with visual signaling to impact myopia. Previous work performed in the mouse retina has demonstrated that functional rod photoreceptors are needed to develop experimentally-induced myopia, alluding to an essential role for rod signaling in refractive development. Read More

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January 2021

Short Wavelength (Blue) Light Is Protective for Lens-Induced Myopia in Guinea Pigs Potentially Through a Retinoic Acid-Related Mechanism.

Invest Ophthalmol Vis Sci 2021 01;62(1):21

Department of Ophthalmology, Eye and ENT Hospital Affiliated to Fudan University, Shanghai, China.

Purpose: To investigate the effect of short-wavelength light (SL) on guinea pigs with lens-induced myopia (LIM) and the possible retinoic acid (RA)-related mechanisms.

Methods: Two-week-old guinea pigs (n = 60) with monocular -5D lenses were reared under white light (WL, 580 lux) or SL (440 nm, 500 lux). The left eyes were uncovered as control. Read More

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January 2021

The impact of visual axis position on the optical quality after implantation of multifocal intraocular lenses with different asphericity values.

Graefes Arch Clin Exp Ophthalmol 2021 Mar 20;259(3):673-683. Epub 2021 Jan 20.

Department of Ophthalmology, Hospital Hietzing, Wolkersbergenstrasse 1, 1130, Vienna, Austria.

Purpose: To evaluate the effect of visual axis positioning on the optical performance of the Tecnis MIOL and the Diff-aA MIOL.

Methods: In this prospective, randomized comparative study, 70 eyes of 35 subjects with senile cataract were implanted with the spherical aberration-correcting diffractive, bifocal Tecnis ZLB00 IOL and 60 eyes of 30 age-matched subjects with the spherical aberration neutral, diffractive, bifocal Diffractiva IOL. Observation procedure was performed 1, 3, and 6 months postoperatively. Read More

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Topically instilled caffeine selectively alters emmetropizing responses in infant rhesus monkeys.

Exp Eye Res 2021 02 9;203:108438. Epub 2021 Jan 9.

Brien Holden Vision Institute, Sydney, Australia; Discipline of Optometry and Vision Science, University of Canberra, Canberra, Australia.

Oral administration of the adenosine receptor (ADOR) antagonist, 7-methylxanthine (7-MX), reduces both form-deprivation and lens-induced myopia in mammalian animal models. We investigated whether topically instilled caffeine, another non-selective ADOR antagonist, retards vision-induced axial elongation in monkeys. Beginning at 24 days of age, a 1. Read More

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February 2021

[Vision screening for children: Recommended practices from AFSOP].

J Fr Ophtalmol 2021 Feb 30;44(2):244-251. Epub 2020 Dec 30.

Service d'ophtalmologie, nouvel hopital civil CHU de Strasbourg, 1, place de l'Hôpital, 67091 Strasbourg, France.

In light of the international literature, a workgroup of experts from the AFSOP met in February 2019 to formulate updated recommendations for visual screening in children. An ophthalmologic examination during the first month of life is recommended for children at risk of developing infantile organic amblyopia. An ophthalmologic examination including cycloplegic refraction between 12 and 15 months of age is recommended for children at risk of developing functional amblyopia. Read More

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February 2021

Astigmatic Results of a Diffractive Trifocal Toric IOL Following Intraoperative Aberrometry Guidance.

Clin Ophthalmol 2020 14;14:4373-4378. Epub 2020 Dec 14.

Sengi, Penniac, NB, Canada.

Purpose: To determine if intraoperative aberrometry (IA) improves astigmatic outcomes for trifocal toric IOL (TTI) cases.

Patients And Methods: This was a retrospective study examining 137 eyes that underwent cataract extraction and TTI implantation using femtosecond laser, digital registration, and IA. Final cylinder power and axis of placement were determined by IA. Read More

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December 2020

Wavefront-guided myopic laser in situ keratomileusis with a high-resolution Hartmann-Shack aberrometer and a new nomogram.

J Cataract Refract Surg 2021 Jul;47(7):847-854

From the Maloney-Shamie Vision Institute, Los Angeles, California (Maloney); Kraff Eye Institute, Chicago, Illinois (Kraff); Coleman Vision, Albuquerque, New Mexico (Coleman).

Purpose: To evaluate visual, refractive, aberrometric, and patient-reported outcomes of wavefront-guided (WFG) myopic laser in situ keratomileusis (LASIK) using a high-resolution Hartmann-Shack aberrometer (iDesign Advanced WaveScan system) with a new nomogram and to determine whether the new nomogram resolved the mild undercorrection that occurs with the manufacturer's default settings.

Setting: Three private LASIK practices.

Design: Prospective, open-label, noncomparative, multicenter study. Read More

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Simultaneous Measurement of Objective and Subjective Accommodation in Response to Step Stimulation.

Invest Ophthalmol Vis Sci 2020 11;61(13):38

Department of Applied Visual Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.

Purpose: This study aimed to evaluate differences in objective and subjective accommodation dynamically and simultaneously.

Methods: Thirty-four pre-presbyopic healthy volunteers (mean age ± SD, 41.0 ± 3. Read More

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November 2020

Refractive Lens Exchange in Hyperopic Presbyopes with the Acrysof IQ Panoptix Intraocular Lens: One-Year Results and Analysis of the Literature.

Ther Clin Risk Manag 2020 19;16:1125-1137. Epub 2020 Nov 19.

Department of Neurology, Medicine and Pharmacy University "Iuliu Hațieganu", Cluj Napoca, Romania.

Purpose: To assess the functional and refractive outcomes in hyperopia and presbyopia correction by clear lens exchange with the intraocular trifocal artificial lens (IOL) Acrysof IQ Panoptix implant at 1 year.

Materials And Methods: A number of 128 eyes (64 patients) underwent clear lens exchange with placement of the trifocal IOL Acrysof IQ Panoptix implant for hyperopia and presbyopia. Prior to the surgery the patients had a complete ocular examination. Read More

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November 2020

Crossed versus conventional pseudophakic monovision for high myopic eyes: a prospective, randomized pilot study.

BMC Ophthalmol 2020 Nov 16;20(1):447. Epub 2020 Nov 16.

Department of Ophthalmology, The First Affiliated Hospital of Chongqing Medical University, No.1 Youyi Road, Yuzhong District, Chongqing, 400000, P.R. China.

Background: Aiming at spectacle independence, conventional pseudophakic monovision has been widely used in myopia patients with bilateral monofocal intraocular lens implantation. However, the crossed monovision, which is to correct the dominant eye for near vision and the non-dominant eye for distant vision, has been mentioned preferable for high myopic cataract patients by some studies. We have conducted this study to compare clinical results to assess the feasibility of conventional and crossed monovision for high myopic pseudophakic patients by comparing patient satisfaction, visual function and spectacle independence. Read More

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November 2020

Clinical Characteristics of Patients with Intermittent Exotropia According to the Response to Short-term Prism Adaptation Test.

Korean J Ophthalmol 2020 10 5;34(5):375-382. Epub 2020 Oct 5.

Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea.

Purpose: To evaluate the prevalence of the prism adaptation response in patients with intermittent exotropia (IXT) using the short-term prism adaptation test (PAT) and to assess factors associated with prism adaptation response in IXT patients.

Methods: A case-controlled retrospective analysis was performed on 113 patients with IXT without prior surgical treatment. Age, sex, visual acuity, refraction, stereoacuity, control scale, type of exotropia, history of occlusion, and presence of accompanying visual symptoms were recorded. Read More

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October 2020