keyword
MENU ▼
Read by QxMD icon Read
search

Presbyopia

keyword
https://www.readbyqxmd.com/read/28439978/simulation-of-commercial-vs-theoretically-optimised-contact-lenses-for-presbyopia
#1
Richard Legras, David Rio
PURPOSE: To compare theoretically optimised bifocal contact lens optical designs to commercially available optical designs for presbyopia. METHODS: Retinal images were simulated, using a numerical eye model, from -6 (i.e., near vision) to +2 D for each 0.25 D. Ten optical profiles were simulated. Four of them corresponded to commercial contact lenses (i.e., Acuvue Oasys for Presbyopia®, Air Optix Aqua Multifocal®, Purevision Multifocal® and Distance Biofinity Multifocal®)...
May 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28437967/design-of-see-through-near-eye-display-for-presbyopia
#2
Yishi Wu, Chao Ping Chen, Lei Zhou, Yang Li, Bing Yu, Huayi Jin
We propose a compact design of see-through near-eye display that is dedicated to presbyopia. Our solution is characterized by a plano-convex waveguide, which is essentially an integration of a corrective lens and two volume holograms. Its design rules are set forth in detail, followed by the results and discussion regarding the diffraction efficiency, field of view, modulation transfer function, distortion, and simulated imaging.
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28430336/an-italian-translation-and-validation-of-the-near-activity-visual-questionnaire-navq
#3
Fabrizio Zeri, Isabella Beltramo, Laura Boccardo, Paolo Palumbo, Vincenzo Petitti, James S Wolffsohn, Shehzad A Naroo
PURPOSE: To validate the Near Activity Vision Questionnaire (NAVQ) in Italian to allow the assessment of presbyopia corrections in Italian-speaking patients. METHODS: An Italian version of the NAVQ was arranged through several steps: an initial forward translation (from English to Italian), a backward translation (from Italian to English), and finally a consensual version to check against the original NAVQ. This prospective study enrolled native Italian-speaking presbyopic patients with corrected distance visual acuity of 0...
April 11, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28430319/evaluation-of-a-device-for-standardized-measurements-of-reading-performance-in-a-prepresbyopic-population
#4
Tschingis Arad, Martin Baumeister, Jens Bühren, Thomas Kohnen
PURPOSE: Automated measurements of reading performance are required for clinical trials involving presbyopia-correcting surgery options. Repeatability of a testing device for reading (Salzburg Reading Desk) was evaluated in a prepresbyopic population. METHODS: Subjective reading performance of 50 subjects divided into 2 age groups (23-30 years and 38-49 years) with distance-corrected eyes was investigated with different log-scaled reading charts. At study entry, refractive parameters were measured and distance visual acuity assessed...
April 20, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28413804/corneal-compensation-of-presbyopia-presbylasik-an-updated-review
#5
REVIEW
Veronica Vargas-Fragoso, Jorge L Alió
ABSTRACT: The main purpose of this review is to compare and analyze the results of the main PresbyLASIK approaches; central and peripheral. SUMMARY: A comprehensive research was conducted in PUBMED using keywords like "presbyopia correction", "PresbyLASIK", "Corneal multifocality", "Laser blended vision". We reviewed the PresbyLASIK technique, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), uncorrected near visual acuity (UNVA), and corrected near visual acuity (CNVA), and compared the differences between the techniques...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/28390052/a-review-of-presbyopia-treatment-with-corneal-inlays
#6
REVIEW
M Amir Moarefi, Shamik Bafna, William Wiley
The prevalence of presbyopia continues to increase every year. The therapeutic approaches to presbyopia cover the spectrum of non-surgical to surgical techniques. With recent advances in biocompatible materials, corneal inlays make a strong case for their place within the treatment spectrum. This article takes a closer look at three of the current corneal inlay models: KAMRA, Raindrop, and Presbia Flexivue Microlens. Each design approach and mode of action is described with data from key clinical trials. Furthermore, the ability to choose the most suitable corneal inlay is presented by comparing each model and identifying their similarities and differences...
April 7, 2017: Ophthalmology and Therapy
https://www.readbyqxmd.com/read/28380104/complete-depigmentation-of-a-small-aperture-corneal-inlay-implanted-for-compensation-of-presbyopia
#7
Mauro Campos, Sandra Beer, Eliane Mayumi Nakano, Cristina Muccioli, Rubens Belfort, Wallace Chamon
We describe a case of late-onset remarkable depigmentation of a small aperture corneal inlay implanted for presbyopia compensation. The patient was a participant in a clinical trial designed to evaluate the safety and efficacy of the AcuFocusTM ACU-10R160, which is a 10 µm-thick polyimide film tinted with an organic dye. Inlay implantation occurred under mechanical microkeratome Lasik flaps set for a depth of 120 µm. The patient returned to the clinic 11 years after surgery and reported loss of near-vision acuity...
January 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28370795/a-pair-of-glasses-and-beyond-impact-of-refractive-error-on-people-s-well-being
#8
Himal Kandel, Jyoti Khadka, Michael Goggin, Konrad Pesudovs
IMPORTANCE: This study qualitative explores the impact of refractive error on adults, particularly after correction. BACKGROUND: The study aimed to explore the impact of refractive error on people's quality of life. DESIGN: Cross sectional; In-depth telephone and face-to-face semi-structured interviews; Qualitative study with inductive and deductive processes PARTICIPANTS: 48 adults with refractive error (including presbyopia) were recruited from the Flinders Vision, the Ashford Advanced Eye Care and among Flinders University staff and students, in South Australia...
March 31, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28366683/multifocal-intraocular-lenses-an-overview
#9
REVIEW
Jorge Alio, Ana B Plaza-Puche, Roberto Férnandez-Buenaga, Joseph Pikkel, Miguel Maldonado
Multifocal intraocular lenses (MfIOLs) are increasingly used in the management of pseudophakic presbyopia. After MfIOL implantation, most patients do not need spectacles or contact lenses and are pleased with the result. Complications, however, may affect the patient's quality of life and level of satisfaction. Common problems with multifocal lenses are blurred vision and photic phenomena associated with residual ammetropia, posterior capsule opacification, large pupil size, wavefront anomalies, dry eye, and lens decentration...
March 30, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28348392/augmented-reality-with-image-registration-vision-correction-and-sunlight-readability-via-liquid-crystal-devices
#10
Yu-Jen Wang, Po-Ju Chen, Xiao Liang, Yi-Hsin Lin
Augmented reality (AR), which use computer-aided projected information to augment our sense, has important impact on human life, especially for the elder people. However, there are three major challenges regarding the optical system in the AR system, which are registration, vision correction, and readability under strong ambient light. Here, we solve three challenges simultaneously for the first time using two liquid crystal (LC) lenses and polarizer-free attenuator integrated in optical-see-through AR system...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344986/erratum-to-pharmacological-treatments-of-presbyopia-a-review-of-modern-perspectives
#11
Antonio Renna, Jorge L Alió, Luis Felipe Vejarano
[This corrects the article DOI: 10.1186/s40662-017-0068-8.].
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/28343751/presbyopic-and-non-presbyopic-contact-lens-opinions-and-vision-correction-preferences
#12
Erin M Rueff, Melissa D Bailey
PURPOSE: To compare vision correction preferences, refractive error, and gender of non-presbyopes and presbyopes. METHODS: Adults who wear spectacles or contact lenses completed a survey about refractive correction opinions and refractive error was measured. RESULTS: Of the 304 subjects, 38.2% were presbyopic (≥40 years) and 59.2% were female. Spectacles were the primary vision correction for 78.0% of subjects. Compared to contact lens wearers, the proportion of presbyopes was higher (p=0...
March 23, 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/28343723/-the-search-for-electrophysiological-predictors-of-visual-comfort-after-presbyopia-correction-with-contact-lenses
#13
A El Ameen, S Majzoub, P-J Pisella
Starting at 40 years of age, prespyopia affects a quarter of the world population. Many techniques of presbyopia surgery have emerged in recent years. The purpose of this study was to compare monovision and multifocality and to identify clinical and electrophysiological predictive markers of visual comfort for each correction available in clinical practice. Ten presbyopic patients participated in this study. Patients received monovision and multifocal correction using contact lenses for three weeks each in a random order...
April 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28337090/is-the-child-to-child-approach-useful-in-improving-uptake-of-eye-care-services-in-difficult-to-reach-rural-communities-experience-from-southwest-nigeria
#14
O O Ayorinde, G V S Murthy, O O Akinyemi
BACKGROUND: To determine if primary school pupils aged 9-14 years can be satisfactorily trained, using the child-to- parent approach, to assess vision, refer and motivate people to attend screening eye camps. METHOD: Ninety pupils aged 9-14 years attending two purposively-selected primary schools were selected by simple random sampling. Using the child-to-parent approach and Snellens 6/60 illiterate E-chart, participants had a three-day knowledge and skill-based training followed by 2 days of community-based vision assessment and referral of those assessed...
December 2016: Annals of Ibadan Postgraduate Medicine
https://www.readbyqxmd.com/read/28294406/does-transient-increase-in-axial-length-during-accommodation-attenuate-with-age
#15
Deborah S Laughton, Amy L Sheppard, Edward A H Mallen, Scott A Read, Leon N Davies
BACKGROUND: The aim was to profile transient accommodative axial length changes from early adulthood to advanced presbyopia and to determine whether any differences exist between the responses of myopic and emmetropic individuals. METHODS: Ocular biometry was measured by the LenStar biometer (Haag-Streit, Switzerland) in response to zero, 3.00 and 4.50 D accommodative stimuli in 35 emmetropes and 37 myopes, aged 18 to 60 years. All results were corrected to reduce errors arising from the increase in crystalline lens thickness with accommodation...
March 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28280636/the-effect-of-high-intensity-focused-ultrasound-keratoplasty-on-rabbit-anterior-segment
#16
Menglei Wang, Meixuan Li, Pisong Yan, Qiang Luo, Yu Zhang, Zhiyu Du
Purpose. To evaluate the safety of high-intensity focused ultrasound keratoplasty as a treatment for presbyopia by examining its effect on the rabbit anterior segment. Methods. The right corneas of 36 New Zealand rabbits were treated with HIFU keratoplasty. The animals were sacrificed at 1, 7, 15, 30, 60, and 90 days after operation. Collagen type I, MMP-2, and MMP-9 were evaluated using immunohistochemistry. For the detection of apoptosis, the TUNEL method was applied. The SOD and MDA levels were analyzed with assay kits...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28242111/cataracts
#17
REVIEW
Yu-Chi Liu, Mark Wilkins, Terry Kim, Boris Malyugin, Jodhbir S Mehta
An estimated 95 million people worldwide are affected by cataract. Cataract still remains the leading cause of blindness in middle-income and low-income countries. With the advancement of surgical technology and techniques, cataract surgery has evolved to small-incisional surgery with rapid visual recovery, good visual outcomes, and minimal complications in most patients. With the development of advanced technology in intraocular lenses, the combined treatment of cataract and astigmatism or presbyopia, or both, is possible...
February 23, 2017: Lancet
https://www.readbyqxmd.com/read/28238194/evaluating-relaxed-ciliary-muscle-tone-in-presbyopic-eyes
#18
Erhan Özyol, Pelin Özyol
PURPOSE: Studies of age-related changes in ciliary muscle (CM) morphology and contractility have variously reported that CM weakens or strengthens with age. In response, the aim of this study was to evaluate relaxed CM tone in vivo in pre-presbyopic and presbyopic patients using a predictor value (PCM). METHODS: Two groups of eyes-40 eyes of 40 healthy volunteers with a mean age of 28.1 ± 5.8 years and 40 eyes of 40 healthy volunteers with a mean age of 56...
February 25, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28191476/pharmacological-treatments-of-presbyopia-a-review-of-modern-perspectives
#19
REVIEW
Antonio Renna, Jorge Luciano Alió, Luis Felipe Vejarano
INTRODUCTION: Presbyopia affects people from the 4(th) decade of life and is characterized by accommodative loss that leads to negative effects on vision-targeted health-related quality of life. A non-invasive pharmacological treatment providing near-lenses independence would be a truly groundbreaking approach in the treatment of presbyopia. The purpose of this review is to analyze the emerging pharmacological solutions proposed to address presbyopia. RESULTS: Several ophthalmic eye drops compounds solutions have been described in peer-reviewed papers or presented in ophthalmological tabloids and congresses...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/28182145/stereoacuity-after-small-aperture-corneal-inlay-implantation
#20
Steven H Linn, David F Skanchy, Tyler S Quist, Jordan D Desautels, Majid Moshirfar
PURPOSE: The aim of this study was to compare stereoacuity before and after KAMRA corneal inlay implantation for the correction of presbyopia. PATIENTS AND METHODS: This is a prospective study of 60 patients who underwent KAMRA inlay implantation. Patients were examined before and 6 months after surgery for stereoacuity, uncorrected distance visual acuity (UDVA), and uncorrected near visual acuity (UNVA). RESULTS: The mean stereoacuity before surgery was 29...
2017: Clinical Ophthalmology
keyword
keyword
33776
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"