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https://www.readbyqxmd.com/read/28708006/a-near-visual-acuity-test-for-dentists
#1
P Perrin, M Eichenberger, K W Neuhaus, A Lussi
Unimpaired near vision is crucial in dentistry, but appropriate visual tests at dental working distance are not publicly available. The aim of this study was to validate a novel visual triage test for dentists that is easy to use and freely available. The near visual acuity at 300 mm of 106 dental professionals (aged 21-65 years) was assessed with 1) a validated near visual test for scientific purposes miniaturized on a microfilm; 2) an experimental test using a US $5 bill, in which the first five words of each line in the Lincoln Memorial frieze had to be read under a dental operating light...
July 14, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28674958/monovision-versus-multifocality-for-presbyopia-systematic-review-and-meta-analysis-of-randomized-controlled-trials
#2
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/28674696/accommodative-intraocular-lenses-where-are-we-and-where-we-are-going
#3
REVIEW
Jorge L Alió, Jorge L Alió Del Barrio, Alfredo Vega-Estrada
Presbyopia still remains the last frontier of refractive surgery. Its surgical management is under constant evolution due to the limitations that exist today with respect to its management, which is probably in relation with the multifactorial basis in which presbyopia is clinically developed in the human. Until currently, virtually all surgical techniques that have been proposed for its correction are based on the induction of pseudoaccommodation in the presbyopic eye, including multifocality. However, the real restoration of accommodation is more complex, and it has been tried by the use of different, so called, "accommodative" pseudophakic intraocular lenses (AIOL)...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/28658954/preparation-and-characterization-of-biomimetic-%C3%AE-lens-crystallins-using-single-chain-polymeric-nanoparticles
#4
Jue Liang, Jessica J Struckhoff, Paul D Hamilton, Nathan Ravi
Presbyopia, the inability to focus at arm's length, and cataract, are associated primarily with changes in the mechanical and optical properties of the lens crystallins. The optical properties, particularly the refractive index, of the human lens originate from cytoplasm of the lens fiber containing highly concentrated solution (~40%) of globular proteins referred to as α, β, and γ crystallins of which β is the most abundant. In this study, we focus on synthesis and characterization of the beta-crystallin biomimetic, in an effort to understand and develop treatments for presbyopia and cataract...
June 28, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28657533/-the-ametrop%C3%A3-as-updated-review-for-non-ophthalmologists-physicians
#5
REVIEW
Virgilio Galvis, Alejandro Tello, Oscar Blanco, Andrea N Laiton, Marion R Dueñas, Priscila Alejandra Hidalgo
Refractive errors are caused by a decoupling of the power of convergence of the eye lens, the cornea and lens, which make the rays reaching the eye to focus and generate an image, and the retina, which is the biological photosensitive screen where the image will be transformed into a nerve impulse. These defects include myopia, hyperopia and astigmatism. Presbyopia can also be considered a refractive defect, but of special features, since only affects near vision in patients older than 40 years. By altering the quality of the focused image on the most sensitive area of the retina (the macula), they decrease visual acuity...
2017: Revista de la Facultad de Ciencias Médicas
https://www.readbyqxmd.com/read/28650131/accommodating-intraocular-lenses
#6
Jay S Pepose, Joshua S Burke, Mujtaba A Qazi
With an explosive increase in the worldwide prevalence of presbyopia, development of an accommodating intraocular lens with expansive accommodative amplitude remains the holy grail in lens-based refractive surgery. A dynamic change in the dioptric power of the eye can be accomplished by various strategies alone or in combination, including changes in the position, shape, or refractive index of a single- or dual- optic intraocular lens (IOL). This article reviews the cumulative advances in these various lens designs, along with clinical outcomes and complications of those that have been implanted...
June 26, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28624312/non-lens-based-surgical-techniques-for-presbyopia-correction
#7
R Bilbao-Calabuig, F Llovet-Osuna
INTRODUCTION: Presbyopia is the most prevalent refractive error. With a progressive aging population, its surgical correction is an important challenge for the ophthalmology community, as well as the millions of patients who suffer from it, and who are increasingly demanding alternatives to its correction with glasses or contact lenses. MATERIAL AND METHODS: A review is presented with a synthesised discussion on the pathophysiological theories of presbyopia and an updated and analytical description of the non-lens involvement surgical techniques used to treat presbyopia...
June 14, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28619486/extended-depth-of-focus-contact-lenses-vs-two-commercial-multifocals-part-2-visual-performance-after-1-week-of-lens-wear
#8
Ravi C Bakaraju, Daniel Tilia, Jennifer Sha, Jennie Diec, Jiyoon Chung, Danny Kho, Shona Delaney, Anna Munro, Varghese Thomas
PURPOSE: To compare the visual performance of prototype contact lenses designed via deliberate manipulation of higher-order spherical aberrations to extend-depth-of-focus with two commercial multifocals, after 1 week of lens wear. METHODS: In a prospective, participant-masked, cross-over, randomized, 1-week dispensing clinical-trial, 43 presbyopes [age: 42-63 years] each wore AIROPTIX Aqua multifocal (AOMF), ACUVUE OASYS for presbyopia (AOP) and extended-depth-of-focus prototypes (EDOF) appropriate to their add requirements...
June 12, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28617724/intracorneal-inlays-for-the-correction-of-presbyopia
#9
Perry S Binder
The current nonsurgical approaches for the correction of presbyopia are spectacles or contact lenses or the use of pharmaceuticals to create an artificial pupil and/or to stimulate residual accommodation. Refractive surgical procedures use a monovision approach and/or a multifocal corneal laser ablation with or without the induction of negative spherical aberration to improve near vision. More recently, new surgical approaches include intracorneal inlays. Inlay approaches include increasing corneal curvature alone, implanting a multifocal inlay, or by implanting a small aperture device that functions as a pinhole to restore unaided near and intermediate visual acuity...
June 14, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28608800/a-novel-laser-refractive-surgical-treatment-for-presbyopia-optics-based-customization-for-improved-clinical-outcome
#10
Bojan Pajic, Brigitte Pajic-Eggspuehler, Joerg Mueller, Zeljka Cvejic, Harald Studer
Laser Assisted in Situ Keratomileusis (LASIK) is a proven treatment method for corneal refractive surgery. Surgically induced higher order optical aberrations were a major reason why the method was only rarely used to treat presbyopia, an age-related near-vision loss. In this study, a novel customization algorithm for designing multifocal ablation patterns, thereby minimizing induced optical aberrations, was used to treat 36 presbyopic subjects. Results showed that most candidates went from poor visual acuity to uncorrected 20/20 vision or better for near (78%), intermediate (92%), and for distance (86%) vision, six months after surgery...
June 13, 2017: Sensors
https://www.readbyqxmd.com/read/28606456/extended-depth-of-focus-contact-lenses-vs-two-commercial-multifocals-part-1-optical-performance-evaluation-via-computed-through-focus-retinal-image-quality-metrics
#11
Ravi C Bakaraju, Klaus Ehrmann, Arthur Ho
PURPOSE: To compare the computed optical performance of prototype lenses designed using deliberate manipulation of higher-order spherical aberrations to extend depth-of-focus (EDOF) with two commercial multifocals. METHODS: Emmetropic, presbyopic, schematic eyes were coupled with prototype EDOF and commercial multifocal lenses (Acuvue Oasys for presbyopia, AOP, Johnson & Johnson & Air Optix Aqua multifocal, AOMF, Alcon). For each test configuration, the through-focus retinal image quality (TFRIQ) values were computed over 21 vergences, ranging from -0...
June 9, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28602334/intraindividual-comparative-analysis-of-the-visual-performance-after-cataract-surgery-with-implantation-of-a-trifocal-and-a-bifocal-intraocular-lens
#12
Ghada Al-Khateeb, Mehdi Shajari, Thomas Kohnen
Presbyopia-treating intraocular lenses (IOLs) are now widely available and offer high predictability at all distances, better visual outcomes, and high patient satisfaction. In most patients, the same multifocal IOL is implanted bilaterally. In certain circumstances, such as during complex surgeries, it is important to be prepared with a backup plan to maintain surgical expectations. We report 3 patients who had femtosecond laser-assisted cataract surgeries in both eyes. The complicated eye had implantation of a bifocal IOL and the fellow eye of a trifocal IOL...
May 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28602333/resident-and-young-physician-experience-with-complex-cataract-surgery-and-new-cataract-and-refractive-technology-results%C3%A2-of%C3%A2-the%C3%A2-ascrs-2016-young-eye%C3%A2-surgeons%C3%A2-survey
#13
Julie M Schallhorn, Jessica B Ciralsky, Elizabeth Yeu
A survey was offered to attendees of the 2016 annual meeting of the American Society of Cataract and Refractive Surgery (ASCRS) as well as online to ASCRS members. Of the 429 self-identified surgeons in training or those with fewer than 5 years in practice, 83% had performed complex cataract surgery using iris expansion devices or capsular tension rings (63%) and 70% had implanted a toric intraocular lens (IOL). A minority of respondents had performed laser-assisted cataract surgery (27%) or implanted presbyopia-correcting IOLs (39%), and only half (50%) had performed laser vision correction (LVC)...
May 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28602323/bifocal-nondiffractive-intraocular-lens-for%C3%A2-enhanced-depth-of-focus-in-correcting-presbyopia-clinical-evaluation
#14
Efstathios Vounotrypidis, Raphael Diener, Christian Wertheimer, Thomas Kreutzer, Armin Wolf, Siegfried Priglinger, Wolfgang J Mayer
PURPOSE: To assess the clinical outcomes and patient satisfaction after bilateral cataract surgery with implantation of a bifocal refractive enhanced depth of focus intraocular lens (IOL) with a low near addition (add). SETTING: Department of Ophthalmology, Ludwig-Maximilians-University Munich, Munich, Germany. DESIGN: Prospective longitudinal case series. METHODS: Eyes with bilateral age-related cataract and corneal astigmatism of less than 1...
May 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28599911/refraction-during-incipient-presbyopia-the-aston-longitudinal-assessment-of-presbyopia-alap-study
#15
Deborah S Laughton, Amy L Sheppard, Leon N Davies
PURPOSE: To investigate non-cycloplegic changes in refractive error prior to the onset of presbyopia. METHODS: The Aston Longitudinal Assessment of Presbyopia (ALAP) study is a prospective 2.5 year longitudinal study, measuring objective refractive error using a binocular open-field WAM-5500 autorefractor at 6-month intervals in participants aged between 33 and 45 years. RESULTS: From the 58 participants recruited, 51 participants (88%) completed the final visit...
June 6, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28566706/adaptation-to-progressive-additive-lenses-potential-factors-to-consider
#16
Tara L Alvarez, Eun H Kim, Bérangère Granger-Donetti
People develop presbyopia as part of the normal aging process. Most presbyopes adapt to progressive additive lens (PALs), while others do not. This investigation sought to determine whether the ability to modify disparity vergence or phoria was correlated to PALs adaptation. In experiment 1, a double-step paradigm quantified the ability to modify convergence responses in sixteen presbyopes. In experiment 2, thirty-one incipient presbyopes participated in a 5-minute sustained fixation task to evoke phoria adaptation where the magnitude and rate of phoria adaptation were measured...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28553423/corneal-refractive-procedures-for-the-treatment-of-presbyopia
#17
REVIEW
Kareem Moussa, Naz Jehangir, Tova Mannis, Wai L Wong, Majid Moshirfar
PURPOSE: Refractive surgery has been in use for a long time and is evolving at a fast pace with several new corneal procedures being used for the correction of presbyopia. The purpose of this article is to give a comprehensive review of the literature to evaluate the outcome and success of different corneal refractive surgical procedures in presbyopic patients. METHODS: We performed a comprehensive search on PubMed to identify published reports of the various procedures utilized in the past and present to correct presbyopia...
2017: Open Ophthalmology Journal
https://www.readbyqxmd.com/read/28515637/ultrasound-biomicroscopy-value-in-evaluation-of-restoration-of-ciliary-muscles-contractility-after-cataract-extraction
#18
Ayser Abd El-Hameed Fayed
PURPOSE: To assess the changes in the contractility of the ciliary muscle in eyes with presbyopia before and after phacoemulsification and intracapsular lens implantation using ultrasound biomicroscopy (UBM). PATIENTS AND METHODS: This prospective study included 50 eyes of 30 consecutive subjects operated at the Department of Ophthalmology. Patients with any ocular disorder affecting visual acuity, corneal surface irregularities, had posterior capsular perforation or intensive postoperative corneal edema, or were <35 years of age, were excluded...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28484647/optimal-keratoplasty-for-the-correction-of-presbyopia-and-hypermetropia
#19
Daniele Veritti, Valentina Sarao, Paolo Lanzetta
Purpose. To evaluate prospectively the safety and efficacy of optimal keratoplasty for the correction of hyperopia and presbyopia. Methods. Consecutive patients undergoing bilateral optimal keratoplasty for refractive presbyopic and hypermetropic corrections were enrolled. Each patient received a complete ophthalmologic examination at baseline, 1 hour, 1 day, 1 week, 1 month, 3 months, and 6 months after treatment. Results. The study included 40 consecutive eyes of 20 patients. All patients reached the 6-month follow-up...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28477324/erratum-to-a-review-of-presbyopia-treatment-with-corneal-inlays
#20
M Amir Moarefi, Shamik Bafna, William Wiley, Jeffrey Augustine
No abstract text is available yet for this article.
June 2017: Ophthalmology and Therapy
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