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Dysphotopsia

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https://www.readbyqxmd.com/read/28732606/visual-performance-after-bilateral-implantation-of-2-new-presbyopia-correcting-intraocular-lenses-trifocal-versus-extended-range-of-vision
#1
Gaspare Monaco, Mariangela Gari, Fabio Di Censo, Andrea Poscia, Giada Ruggi, Antonio Scialdone
PURPOSE: To compare the visual outcomes and quality of vision of 2 new diffractive multifocal intraocular lenses (IOLs) with those of a monofocal IOL. SETTING: Fatebenefratelli e Oftalmico Hospital, Milan, Italy. DESIGN: Prospective case series. METHODS: Patients had bilateral cataract surgery with implantation of a trifocal IOL (Panoptix), an extended-range-of-vision IOL (Symfony), or a monofocal IOL (SN60WF). Postoperative examinations included assessing distance, intermediate, and near visual acuity; binocular defocus; intraocular and total aberrations; point-spread function (PSF); modulation transfer function (MTF); retinal straylight; and quality-of-vision (QoV) and spectacle-dependence questionnaires...
June 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28731877/simple-preoperative-ink-test-as-a-novel-adjunct-to-intrastromal-keratopigmentation-for-post-laser-peripheral-iridotomy-dysphotopsias
#2
Stephan Ong Tone, Daniel Q Li, Zach Ashkenazy, Armand Borovik, Allan R Slomovic, David S Rootman, Clara C Chan
PURPOSE: To describe a simple preoperative ink test as a novel adjunct to intrastromal keratopigmentation for post-laser peripheral iridotomy (LPI) dysphotopsias. METHODS: A surgical marking pen is applied to the area over a peripheral iridotomy before intrastromal keratopigmentation. The patient can then assess whether there is any improvement in their symptoms of dysphotopsias. Manual intrastromal keratopigmentation can then be performed using a crescent blade into the clear cornea at 50% depth and tunneled centrally to create a pocket ensuring that the peripheral iridotomy is fully occluded...
July 19, 2017: Cornea
https://www.readbyqxmd.com/read/28730093/a-systematic-review-of-pseudophakic-monovision-for-presbyopia-correction
#3
REVIEW
Georgios Labiris, Aspa Toli, Aslin Perente, Panagiota Ntonti, Vassilios P Kozobolis
A systematic review of the recent literature regarding pseudophakic monovision as a reliable methods for presbyopia correction was performed based on the PubMed, MEDLINE, Nature and the American Academy of Ophthalmology databases in July 2015 and data from 18 descriptive and 12 comparative studies were included in this narrative review. Pseudophakic monosvision seems to be an effective method for presbyopia with high rates of spectacles independence and minimal dysphotopsia side-effects, that should be considered by the modern cataract surgeons...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28726357/the-complexities-of-negative-dysphotopsia
#4
Ivayla I Geneva, Bonnie A Henderson
The appearance of a dark shadow in the temporal periphery, otherwise known as negative dysphotopsia, continues to be a problem for some patients after routine uncomplicated cataract surgery. Etiologies include type and design of intraocular lens (IOL), anatomical features and dimensions of the eye, pupil size, angle kappa, relationship of the optic to the anterior capsule, and the position of the optic/haptic junction of the IOL. Although the primary etiology remains controversial, it is clear that the cause is multifactorial...
July 18, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28674958/monovision-versus-multifocality-for-presbyopia-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#5
REVIEW
Lidija Kelava, Hrvoje Barić, Mladen Bušić, Ivan Čima, Vladimir Trkulja
INTRODUCTION: Refractive surgery in presbyopia tends to achieve spectacle independence with minimal optical disturbances. We compared monovision to multifocality procedures regarding these outcomes. METHODS: We conducted a systematic review of published (till November 21, 2016) randomized controlled trials (RCTs) comparing any monovision to any multifocality method or comparing different monovision/multifocality methods to each other that enabled direct or indirect comparisons between particular monovision and particular multifocality procedures in presbyopic patients undergoing cataract-related or unrelated surgery in respect to spectacle independence, unaided binocular visual acuity (VA), contrast sensitivity (CS), and adverse events...
July 3, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28661569/effect-of-active-evaluation-on-the-detection-of-negative-dysphotopsia-after-sequential-cataract-surgery-discrepancy-between-incidences-of-unsolicited-and-solicited-complaints
#6
Natalia Y Makhotkina, Marjan D Nijkamp, Tos T J M Berendschot, Bart van den Borne, Rudy M M A Nuijts
PURPOSE: To evaluate the incidence of negative dysphotopsia after sequential cataract surgery. METHODS: Retrospective cohort study. The incidence of negative dysphotopsia was assessed by retrospective reviewing of medical records and interviews with patients between 2 and 4 months after sequential cataract surgery. Inclusion criteria were uncomplicated surgery, postoperative corrected distance visual acuity (CDVA) ≥20/25 Snellen and the absence of ocular comorbidity...
June 29, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28574135/patient-centered-and-visual-quality-outcomes-of-premium-cataract-surgery-a-systematic-review
#7
Sophia Y Wang, Maxwell S Stem, Gale Oren, Roni Shtein, Paul R Lichter
PURPOSE: Over 8 million cataract surgeries are performed in the United States and the European Union annually, with many patients choosing to pay out of pocket for premium options including premium intraocular lens implants (IOLs) or laser-assisted cataract surgery (LACS). This report provides a systematic review evaluating patient-centered and visual quality outcomes comparing standard monofocal IOLs to premium cataract surgery options. METHODS: PubMed and EMBASE were searched for publications published between January 1, 1980, and September 18, 2016, on multifocal, accommodative, and toric IOLs, monovision, and LACS, which reported on 1) dysphotopsias, 2) contrast sensitivity, 3) spectacle independence, 4) vision-related quality of life or patient satisfaction, and 5) IOL exchange...
April 24, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28433446/functional-magnetic-resonance-imaging-to-assess-the-neurobehavioral-impact-of-dysphotopsia-with-multifocal-intraocular-lenses
#8
Andreia M Rosa, Ângela C Miranda, Miguel Patrício, Colm McAlinden, Fátima L Silva, Joaquim N Murta, Miguel Castelo-Branco
PURPOSE: To investigate the association between dysphotopsia and neural responses in visual and higher-level cortical regions in patients who recently received multifocal intraocular lens (IOL) implants. DESIGN: Cross-sectional study. PARTICIPANTS: Thirty patients 3 to 4 weeks after bilateral cataract surgery with diffractive IOL implantation and 15 age- and gender-matched control subjects. METHODS: Functional magnetic resonance imaging (fMRI) was performed when participants viewed low-contrast grating stimuli...
April 19, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28407161/preliminary-evidence-of-successful-near-vision-enhancement-with-a-new-technique-presbyopic-allogenic-refractive-lenticule-pearl-corneal-inlay-using-a-smile-lenticule
#9
Soosan Jacob, Dhivya Ashok Kumar, Amar Agarwal, Athiya Agarwal, Ramalingam Aravind, A I Saijimol
PURPOSE: To describe a new technique (PrEsbyopic Allogenic Refractive Lenticule [PEARL] inlay) using an allogenic corneal inlay prepared from a small incision lenticule extraction (SMILE) lenticule. METHODS: A SMILE lenticule of specified thickness (mean: 61.5 ± 3.32 µm) was trephined at the center to 1-mm diameter and implanted in the cornea on the coaxially sighted light reflex under a femtosecond laser-created cap of 120 µm in the nondominant eye of presbyopic patients...
April 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28366376/negative-dysphotopsia-causes-and-rationale-for-prevention-and-treatment
#10
Jack T Holladay, Michael J Simpson
PURPOSE: To determine the cause of negative dysphotopsia using standard ray-tracing techniques and identify the primary and secondary causative factors. SETTING: Department of Ophthalmology, Baylor College of Medicine, Houston, Texas, USA. DESIGN: Experimental study. METHODS: Zemax ray-tracing software was used to evaluate pseudophakic and phakic eye models to show the location of retinal field images from various visual field objects...
February 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28007099/in-the-bag-nasal-intraocular-lens-optic-truncation-for-treatment-of-negative-dysphotopsia
#11
Neeti Meghnad Alapati, George J Harocopos, Arsham Sheybani
We describe in-the-bag nasal intraocular lens (IOL) optic truncation, a new technique for the treatment of negative dysphotopsia. After a plane is created between the nasal capsular bag and the IOL, micrograspers and intraocular scissors are used to amputate the nasal optic edge. The amputation is to reduce the optical impact of the IOL edge and nasal anterior capsule on the occurrence of negative dysphotopsia. The technique addresses many of the proposed mechanisms contributing to the development of negative dysphotopsia and can theoretically be used in all patients with chronic symptomatology...
December 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27956290/objective-evaluation-of-negative-dysphotopsia-with-goldmann-kinetic%C3%A2-perimetry
#12
Natalia Y Makhotkina, Tos T J M Berendschot, Rudy M M A Nuijts
PURPOSE: To compare the extension of peripheral visual fields in phakic and pseudophakic patients and to evaluate whether Goldmann kinetic perimetry can be used as an objective measure of negative dysphotopsia. SETTING: University Eye Clinic, Maastricht University Medical Centre, Maastricht, the Netherlands. DESIGN: Prospective and case-control study. METHODS: Kinetic perimetry was performed with V4e and I4e stimuli...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27830188/introduction-of-a-toric-intraocular-lens-to-a-non-refractive-cataract-practice-challenges-and-outcomes
#13
Clare Kirwan, John M Nolan, Jim Stack, Ian Dooley, Johnny Moore, Tara Cb Moore, Stephen Beatty
AIM: To identify challenges inherent in introducing a toric intraocular lens (IOL) to a non-refractive cataract practice, and evaluate residual astigmatism achieved and its impact on patient satisfaction. METHODS: Following introduction of a toric IOL to a cataract practice with all procedures undertaken by a single, non-refractive, surgeon (SB), pre-operative, intra-operative and post-operative data was analysed. Attenuation of anticipated post-operative astigmatism was examined, and subjectively perceived visual functioning was assessed using validated questionnaires...
May 25, 2016: International Journal of Ophthalmology and Clinical Research
https://www.readbyqxmd.com/read/27678470/ring-shaped-dysphotopsia-associated-with-posterior-chamber-phakic-implantable-collamer-lenses-with-a-central-hole
#14
Youngsub Eom, Dae Wook Kim, Dongok Ryu, Jun-Heon Kim, Seul Ki Yang, Jong Suk Song, Sug-Whan Kim, Hyo Myung Kim
PURPOSE: To evaluate the incidence of central hole-induced ring-shaped dysphotopsia after posterior chamber phakic implantable collamer lens (ICL) with central hole (hole ICL) implantation and to investigate the causes of central hole-induced dysphotopsia. METHODS: The clinical study enrolled 29 eyes of 15 consecutive myopic patients implanted with hole ICL. The incidence of ring-shaped dysphotopsia after hole ICL implantation was evaluated. In the experimental simulation study, non-sequential ray tracing was used to construct myopic human eye models with hole ICL and ICL without a central hole (conventional ICL)...
September 28, 2016: Acta Ophthalmologica
https://www.readbyqxmd.com/read/27341093/-the-effect-of-multifocal-toric-lens-rotation-on-visual-quality
#15
M Veselá, D Baráková, D Bujalková, D Garajová
PURPOSE: The aim of the study was evaluation and comparison of rotational stability and the effect of multifocal toric intraocular lens rotation (T-MIOL) at visual quality of two types of intraocular lens AcrySof IQ ReSTOR Toric SND1Tx (Alcon Laboratories, Inc.) and AT LISA toric 909M (Carl Zeiss Meditec AG). There was evaluated a pseudophakic dysphotopsia based on patients subjective feelings as well as the independence on glasses and overall satisfaction with the visual quality after T-MIOLs were implanted...
2016: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/27304603/stability-of-a-novel-intraocular-lens-design-comparison-of-two-trifocal-lenses
#16
Francisco Poyales, Nuria Garzón, Jos J Rozema, Concepción Romero, Begoña Ortíz de Zárate
PURPOSE: To compare visual outcomes, rotational stability, and centration in a randomized controlled trial in patients undergoing cataract surgery who were bilaterally implanted with two different trifocal intraocular lenses (IOLs) with a similar optical zone but different haptic shape. METHODS: Twenty-one patients (42 eyes) with cataract and less than 1.50 D of corneal astigmatism underwent implantation of one FineVision/MicoF IOL in one eye and one POD FineVision IOL in the contralateral eye (PhysIOL, Liège, Belgium) at IOA Madrid Innova Ocular, Madrid, Spain...
June 1, 2016: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/27257726/current-theories-and-methods-for-managing-negative-dysphotopsia
#17
Garett S Frank, Preeya K Gupta
No abstract text is available yet for this article.
2016: International Ophthalmology Clinics
https://www.readbyqxmd.com/read/27035075/an-update-on-new-low-add-multifocal-intraocular-lenses
#18
REVIEW
Mario J Rojas, Elizabeth Yeu
PURPOSE OF REVIEW: The purpose of this article is to provide an overview and update on recent literature regarding low-add multifocal intraocular lenses (MFIOLs). RECENT FINDINGS: Clinical and benchwork studies involving low-add MFIOLs were reviewed. Clinical studies focused on uncorrected distance, intermediate, and near vision, along with secondary dysphotopsias. Studies done in the laboratory assessed the optical properties of various lenses, and optically replicated visual scenarios at different viewing distances...
July 2016: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/26796456/extending-the-range-of-vision-using-diffractive-intraocular-lens-technology
#19
Henk A Weeber, Sieger T Meijer, Patricia A Piers
PURPOSE: To describe and to experimentally assess a new intraocular lens (IOL) design using new diffractive technology. SETTING: AMO Groningen b.v., Groningen, Netherlands. DESIGN: Experimental study. MATERIALS AND METHODS: The basic principles of the new diffractive technology are described. The new IOL comprises two diffractive technologies; one is designed to extend the range of vision by elongating the focus, and the other increases the retinal image contrast by correcting chromatic aberration...
December 2015: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/26429472/a-novel-full-angle-scanning-light-scattering-profiler-to-quantitatively-evaluate-forward-and-backward-light-scattering-from-intraocular-lenses
#20
Bennett N Walker, Robert H James, Don Calogero, Ilko K Ilev
Glare, glistenings, optical defects, dysphotopsia, and poor image quality are a few of the known deficiencies of intraocular lenses (IOLs). All of these optical phenomena are related to light scatter. However, the specific direction that light scatters makes a critical difference between debilitating glare and a slightly noticeable decrease in image quality. Consequently, quantifying the magnitude and direction of scattered light is essential to appropriately evaluate the safety and efficacy of IOLs. In this study, we introduce a full-angle scanning light scattering profiler (SLSP) as a novel approach capable of quantitatively evaluating the light scattering from IOLs with a nearly 360° view...
September 2015: Review of Scientific Instruments
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