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https://www.readbyqxmd.com/read/28328814/clinical-outcomes-of-new-toric-trifocal-diffractive-intraocular-lens-in-patients-with-cataract-and-stable-keratoconus-six-months-follow-up
#1
Doroodgar Farideh, Sanginabadi Azad, Niazi Feizollah, Niazi Sana, Alinia Cyrus, Ghoreishi Mohammad, Baradaran-Rafii Alireza
PURPOSE: To evaluate the clinical results of toric trifocal diffractive intraocular lens in eyes with cataract and mild keratoconus. METHODS: Five keratoconus patients (10 eyes) that had bilateral AT LISA 939 implantation were selected and had followed in 3-time horizons of 1, 3, and 6 months. Patients were 46 to 65 years old age, corneal astigmatism of (2.00 D at 6.75 D) and cataract that all of them needed cataract surgery. The distance, intermediate and near visual acuities, defocus curve, ocular aberrations, contrast sensitivity, were measured as effectiveness criteria...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28327351/parkinson-s-patients-can-rely-on-perspective-cues-to-perceive-3d-space
#2
Alexandra Séverac Cauquil, Fabienne Ory-Magne, Vincent Jardiné, Monique Galitzky, Maxime Rosito, Christine Brefel-Courbon, Simona Celebrini
3D perception, which is necessary for an optimal navigation in our environment, relies on 2 complementary kinds of cues; binocular cues allowing precise depth localization near the point of visual interest and monocular ones that are necessary for correct global perception of visual space. Recent studies described deficient binocular 3D vision in PD patients; here we tested 3D vision in PD patients when based on monocular cues (m3D). Sixteen PD patients and 16 controls had to categorize visual stimuli as perceived in 2D (flat) or 3D (with depth)...
March 18, 2017: Brain Research
https://www.readbyqxmd.com/read/28325621/-diplopia-an-important-symptom-in-internal-medicine
#3
S Bidot, V Biousse
Diplopia is defined as "double vision" when looking at a single object. Monocular diplopia is related to an ocular disorder and must be differentiated from binocular diplopia which is secondary to ocular misalignment. The examination of the patient with binocular diplopia is often challenging for non-specialists. However, a careful and systematic clinical examination followed by targeted ancillary testing allows the clinician to localize the lesion along the oculomotor pathways. The lesion may involve the brainstem, the ocular motor nerves III, IV or VI, the neuromuscular junction, the extraocular ocular muscles, or the orbit...
March 18, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28324112/recurrence-of-retinopathy-of-prematurity-after-intravitreal-ranibizumab-monotherapy-timing-and-risk-factors
#4
Jiao Lyu, Qi Zhang, Chun-Li Chen, Yu Xu, Xun-Da Ji, Jia-Kai Li, Qiu-Jing Huang, Pei-Quan Zhao
Purpose: To investigate timing and risk factors of recurrent retinopathy of prematurity (ROP) after intravitreal ranibizumab (IVR) monotherapy. Methods: Fifty eyes (the more severe eye) of 50 infants treated with IVR monotherapy for type 1 ROP were studied retrospectively. The mean follow-up time was 31 weeks after IVR. Recurrent ROP (recurrence of extraretinal fibrovascular proliferation [EFP]) was determined by RetCam wide-angle fundus imaging and binocular indirect ophthalmoscopy...
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28323541/3d-technology-of-sony-bloggie-has-no-advantage-in-decision-making-of-tennis-serve-direction-a-randomized-placebo-controlled-study
#5
Sicong Liu, Jason Ritchie, Camilo Sáenz-Moncaleano, Savanna K Ward, Cody Paulsen, Tyler Klein, Oscar Gutierrez, Gershon Tenenbaum
This study aimed at exploring whether 3D technology enhances tennis decision-making under the conceptual framework of human performance model. A 3 (skill-level: varsity, club, recreational) × 3 (experimental condition: placebo, weak 3D [W3D], strong 3D [S3D]) between-participant design was used. Allocated to experimental conditions by a skill-level stratified randomization, 105 tennis players judged tennis serve direction from video scenarios and rated their perceptions of enjoyment, flow, and presence during task performance...
March 21, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28323148/results-of-combined-resection-recession-on-a-single-rectus-muscle-for-incomitant-deviations-an-alternative-to-the-faden-technique
#6
Gill Roper-Hall, Oscar A Cruz
PURPOSE: To compare outcomes of combined resection and recession on previously unoperated single horizontal or vertical rectus muscles in consecutive adult patients with acquired incomitant deviations minimal in primary gaze and maximal in an eccentric gaze position. METHODS: The surgical goal was to decrease the incomitance by 50%, expand the field of binocular single vision, and relieve diplopia. Recessions for the maximal deviations were combined with smaller resections using hang-back, nonadjustable sutures...
March 16, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28318736/longitudinal-study-of-visual-function-in-patients-with-relapsing-remitting-multiple-sclerosis-with-and-without-a-history-of-optic-neuritis
#7
A González Gómez, A García-Ben, A Soler García, I García-Basterra, F Padilla Parrado, J M García-Campos
INTRODUCTION: The contrast sensitivity test determines the quality of visual function in patients with multiple sclerosis (MS). The purpose of this study is to analyse changes in visual function in patients with relapsing-remitting MS with and without a history of optic neuritis (ON). METHODS: We conducted a longitudinal study including 61 patients classified into 3 groups as follows: a) disease-free patients (control group); b) patients with MS and no history of ON; and c) patients with MS and a history of unilateral ON...
March 15, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28317909/the-active-side-of-stereopsis-fixation-strategy-and-adaptation-to-natural-environments
#8
Agostino Gibaldi, Andrea Canessa, Silvio P Sabatini
Depth perception in near viewing strongly relies on the interpretation of binocular retinal disparity to obtain stereopsis. Statistical regularities of retinal disparities have been claimed to greatly impact on the neural mechanisms that underlie binocular vision, both to facilitate perceptual decisions and to reduce computational load. In this paper, we designed a novel and unconventional approach in order to assess the role of fixation strategy in conditioning the statistics of retinal disparity. We integrated accurate realistic three-dimensional models of natural scenes with binocular eye movement recording, to obtain accurate ground-truth statistics of retinal disparity experienced by a subject in near viewing...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28316191/-in-vivo-confocal-microscopic-observation-of-corneal-changes-in-patients-with-chronic-stevens-johnson-syndrome-or-toxic-epidermal-necrolysis
#9
T T Gao, Y Li, J Liu, Q Long
Objective: To describe corneal alterations visible on in vivo confocal microscopy in patients with debilitating ocular sequelae caused by Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN). Methods: Twenty-two eyes of 11 consecutive patients suffering from chronic SJS or TEN were studied using slit lamp and in vivo confocal microscopy in the Ophthalmology Outpatient Department of Peking Union Medical College Hospital from March 2014 to April 2015. Results: Dry eye with meibomian gland dysfunction (19 eyes of 10 patients, 86...
March 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28315403/wright-central-plication-of-lateral-rectus-versus-standard-medial-rectus-recession-in-adult-divergence-insufficiency-esotropia
#10
Wright W Kenneth, Giulia Corradetti
PURPOSE: Wright central plication is a minimally invasive tightening procedure described for the first time by Wright and colleagues in 2012. We compare outcomes of lateral rectus central plication (LRCP) to medial rectus recession (MRR) in the treatment of adult divergence insufficiency esotropia (ADIE). METHODS: A retrospective chart review of 30 consecutive patients with ADIE, who underwent either LRCP or MRR between 2010 and 2015 was performed. INCLUSION CRITERIA: age ≥ 45 years, LRCP or MRR surgery fixed suture technique, esotropia (ET) at least 10(Δ) greater at distance than at near, subjective diplopia at distance, fusion at near fixation, follow-up of at least 6 months...
March 14, 2017: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28303363/test-retest-reliability-of-scotopic-full-field-electroretinograms-in-rabbits
#11
Jan Luebke, Alexandra Anton, Michael Bach
PURPOSE: To explore test-retest reliability of standard scotopic full-field ERG measurements in New Zealand White rabbits. The ERG is widely used for testing of retinal integrity after any ocular treatment. We here present detailed stimulus-response dependencies for single healthy and untreated animals, concentrating on test-retest reproducibility. MATERIALS AND METHODS: Five New Zealand White rabbits (aged 8-10 weeks, weight about 2.0-2.5 kg) underwent binocular ERG measurements after intramuscular anesthesia and pharmaceutical pupillary dilatation at a baseline day and 10 days later...
March 16, 2017: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/28301094/binocular-rivalry-in-children-on-the-autism-spectrum
#12
Themelis Karaminis, Claudia Lunghi, Louise Neil, David Burr, Elizabeth Pellicano
When different images are presented to the eyes, the brain is faced with ambiguity, causing perceptual bistability: visual perception continuously alternates between the monocular images, a phenomenon called binocular rivalry. Many models of rivalry suggest that its temporal dynamics depend on mutual inhibition among neurons representing competing images. These models predict that rivalry should be different in autism, which has been proposed to present an atypical ratio of excitation and inhibition [the E/I imbalance hypothesis; Rubenstein & Merzenich, 2003]...
March 16, 2017: Autism Research: Official Journal of the International Society for Autism Research
https://www.readbyqxmd.com/read/28300605/a-rapid-quantification-of-binocular-misalignment-without-recording-eye-movements-vertical-and-torsional-alignment-nulling
#13
Kara H Beaton, Mark J Shelhamer, Dale C Roberts, Michael C Schubert
BACKGROUND: Small, innate asymmetries between the left and right otolith organs can cause ocular misalignment with symptoms that include double vision and motion sickness. Additionally, ocular misalignment affects nearly 5% of the US population. We have developed a portable, non-invasive technology that uses subjective perception of binocular visual signals to estimate relative binocular alignment. NEW METHOD AND RESULTS: The Vertical Alignment Nulling (VAN) and Torsional Alignment Nulling (TAN) tests ask subjects to view one red and one blue line on a tablet computer while looking through color-matched red and blue filters so that each eye sees only one of the lines...
March 11, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28291198/-clinical-results-of-aphakia-correction-with-multifocal-intraocular-lenses
#14
G V Voronin, V R Mamikonyan, V M Sheludchenko, M N Narbut
AIM: to assess visual functions and ergonomics after bilateral versus unilateral implantation of Lentis Comfort LS-313 MF15 multifocal intraocular lenses (MIOL) in aphakic eyes. MATERIAL AND METHODS: A total of 20 patients with М LENTIS LS-313 MF15 MIOLs were followed up. Group 1 consisted of 12 patients after bilateral symmetric implantation, group 2 - of 8 patients after unilateral procedure. The following parameters were examined: uncorrected binocular visual acuity at far, near, and intermediate distances under photopic and mesopic conditions, the range of pseudoaccommodation, spatial contrast sensitivity to achromatic sinusoidal gratings, lens stability with account to its optical design, and patient satisfaction with the resultant vision...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28288201/optokinetic-nystagmus-reflects-perceptual-directions-in-the-onset-binocular-rivalry-in-parkinson-s-disease
#15
Mana Fujiwara, Catherine Ding, Lisandro Kaunitz, Julie C Stout, Dominic Thyagarajan, Naotsugu Tsuchiya
Optokinetic nystagmus (OKN), the reflexive eye movements evoked by a moving field, has recently gained interest among researchers as a useful tool to assess conscious perception. When conscious perception and stimulus are dissociated, such as in binocular rivalry-when dissimilar images are simultaneously presented to each eye and perception alternates between the two images over time-OKN correlates with perception rather than with the physical direction of the moving field. While this relationship is well established in healthy subjects, it is yet unclear whether it also generalizes to clinical populations, for example, patients with Parkinson's disease...
2017: PloS One
https://www.readbyqxmd.com/read/28283212/-identification-of-perforating-vessels-by-augmented-reality-application-for-the-deep-inferior-epigastric-perforator-flap
#16
R Bosc, A Fitoussi, F Pigneur, V Tacher, B Hersant, J-P Meningaud
The augmented reality on smart glasses allows the surgeon to visualize three-dimensional virtual objects during surgery, superimposed in real time to the anatomy of the patient. This makes it possible to preserve the vision of the surgical field and to dispose of added computerized information without the need to use a physical surgical guide or a deported screen. TECHNIQUE: The three-dimensional objects that we used and visualized in augmented reality came from the reconstructions made from the CT-scans of the patients...
March 7, 2017: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/28281282/functional-visual-fields-relationship-of-visual-field-areas-to-self-reported-function
#17
Hikmat Subhi, Keziah Latham, Joy Myint, Michael D Crossland
PURPOSE: The aim of this study is to relate areas of the visual field to functional difficulties to inform the development of a binocular visual field assessment that can reflect the functional consequences of visual field loss. METHODS: Fifty-two participants with peripheral visual field loss undertook binocular assessment of visual fields using the 30-2 and 60-4 SITA Fast programs on the Humphrey Field Analyser, and mean thresholds were derived. Binocular visual acuity, contrast sensitivity and near reading performance were also determined...
March 9, 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28277623/near-visual-impairment-and-spectacle-coverage-in-telangana-india
#18
Srinivas Marmamula, Rohit C Khanna Doms, Eswararao Kunuku, Gullapalli N Rao
IMPORTANCE: The study highlights the burden of Near Visual Impairment (NVI) in India BACKGROUND: NVI is a common condition that can be addressed through provision of spectacles. The study aims to assess the prevalence of NVI and spectacle coverage among those aged ≥40 years south Indian state of Telangana. DESIGN: Population based cross sectional study using a rapid assessment methodology. PARTICIPANTS: 5140 participants enumerated from 123 clusters in two districts and have presenting distance visual acuity of ≥ 6/18 in the better eye...
March 9, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28276792/binocular-vision-and-squint-part-1
#19
Isolde den Tonkelaar, Harold H Henkes, Gijsbert K van Leersum
No abstract text is available yet for this article.
March 2017: Strabismus
https://www.readbyqxmd.com/read/28275144/diverted-by-dazzle-perceived-movement-direction-is-biased-by-target-pattern-orientation
#20
Anna E Hughes, Christian Jones, Kaustuv Joshi, David J Tolhurst
'Motion dazzle' is the hypothesis that predators may misjudge the speed or direction of moving prey which have high-contrast patterning, such as stripes. However, there is currently little experimental evidence that such patterns cause visual illusions. Here, observers binocularly tracked a Gabor target, moving with a linear trajectory randomly chosen within 18° of the horizontal. This target then became occluded, and observers were asked to judge where they thought it would later cross a vertical line to the side...
March 15, 2017: Proceedings. Biological Sciences
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