Read by QxMD icon Read

"Vision Evaluation"

Abinaya Priya Venkataraman, Simon Winter, Robert Rosén, Linda Lundström
PURPOSE: Peripheral resolution acuity depends on the orientation of the stimuli. However, it is uncertain if such a meridional effect also exists for peripheral detection tasks because they are affected by optical errors. Knowledge of the quantitative differences in acuity for different grating orientations is crucial for choosing the appropriate stimuli for evaluations of peripheral resolution and detection tasks. We assessed resolution and detection thresholds for different grating orientations in the peripheral visual field...
June 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Tine Vandenbroucke, Ronald Buyl, Julie De Zaeytijd, Miriam Bauwens, André Uvijls, Elfride De Baere, Bart P Leroy
PURPOSE: To investigate the type and severity of acquired colour vision deficiencies (CVDs) in molecularly proven Stargardt disease (STD) and to establish whether a relationship exists between best-corrected visual acuity (BCVA) and full-field electroretinography (ffERG), and the degree of CVD. METHODS: A retrospective, cross-sectional study of 73 patients with a molecularly proven diagnosis of STD, who underwent extensive colour vision evaluation, using pseudo-isochromatic and arrangement tests...
2015: Ophthalmic Research
A Laborante, C Longo, E Mazzilli, K Giardinelli
PURPOSE: To evaluate the effect induced by UVA radiation with corneal iontophoresis and cross-linking. MATERIALS AND METHODS: From February 2013 to August 2014 we saw 15 eyes of 15 patients, age range 19-38 years (10 women and 5 men) keratoconus stage 1-2. Vision evaluation was carried out with ETDRS scale and Topography and Pachymetry. To evaluate line of demarcation with the confocal microscope and corneal optical coherence tomography (OCT) and the pain with the Faces Pain Scale...
2015: La Clinica Terapeutica
Bhaskar Janve, Wade Yang, Charles Sims
Power ultrasound reduces the traditional corn steeping time from 18 to 1.5 h during tortilla chips dough (masa) processing. This study sought to examine consumer (n = 99) acceptability and quality of tortilla chips made from the masa by traditional compared with ultrasonic methods. Overall appearance, flavor, and texture acceptability scores were evaluated using a 9-point hedonic scale. The baked chips (process intermediate) before and after frying (finished product) were analyzed using a texture analyzer and machine vision...
June 2015: Journal of Food Science
Jason S Ng, Eriko Self, John E Vanston, Andrew L Nguyen, Michael A Crognale
PURPOSE: Clinical color vision evaluation has been based primarily on the same set of tests for the past several decades. Recently, computer-based color vision tests have been devised, and these have several advantages but are still not widely used. In this study, we evaluated the Waggoner Computerized Color Vision Test (CCVT), which was developed for widespread use with common computer systems. METHODS: A sample of subjects with (n = 59) and without (n = 361) color vision deficiency (CVD) were tested on the CCVT, the anomaloscope, the Richmond HRR (Hardy-Rand-Rittler) (4th edition), and the Ishihara test...
April 2015: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Pawan Kumar Singh, Aniruddha Purushottam Dayama, Rakhi Maiwall, Vineet Sehgal, Pradeep Venkatesh, Pravas Chandra Mishra, Tulika Seth, Manoranjan Mahapatra
Forty-five years old male, a known case of T cell acute lymphoblastic leukemia (ALL) on maintenance therapy presented with bilateral painless progressive diminution of vision. Evaluation revealed cytomegalovirus (CMV) retinitis with low CD4 counts. CMV retinitis is usually seen in HIV disease or in post allogenic stem cell transplant recipients. CMV retinitis occurring in ALL maintenance phase is very rare. The disease is aggressive and shows incomplete response to medical therapy.
September 2014: Indian Journal of Hematology & Blood Transfusion
Hui Liu, Xu Wang
In condition of direct vision on hindus of eye, microperimeter can quantitatively detect the retinal light sensitivity of macular area, and record real time tracking of the eye, automatically analyze the location and stability of fixation. Microperimeter matches hindus image with micro cyclogram point-to-point, thus it achieves the combination of visual function and structure. The characteristics of microperimeter have good relations with subjective vision, so it can be a new method for the accurate vision evaluation and has application potential to assess the visual function in legal medicine...
June 2014: Fa Yi Xue za Zhi
Christina Nye
Implementing standard vision screening techniques in the primary care practice is the most effective means to detect children with potential vision problems at an age when the vision loss may be treatable. A critical period of vision development occurs in the first few weeks of life; thus, it is imperative that serious problems are detected at this time. Although it is not possible to quantitate an infant's vision, evaluating ocular health appropriately can mean the difference between sight and blindness and, in the case of retinoblastoma, life or death...
June 2014: Pediatric Clinics of North America
Paul D Loprinzi, Nazlee Zebardast, Pradeep Y Ramulu
PURPOSE: To examine the association between vision loss and cardiorespiratory fitness among young and middle-age U.S. adults. DESIGN: The study had a cross-sectional design. SETTING: The National Health and Nutrition Examination Survey 1999-2004 served as the study setting. SUBJECTS: Study subjects included 3135 adults ages 20 to 49 years. MEASURES: Cardiorespiratory fitness was assessed from cardiorespiratory extrapolation using heart rate response during submaximal treadmill testing, with inadequate cardiorespiratory fitness defined as below the 60th percentile for age and gender...
March 2015: American Journal of Health Promotion: AJHP
Kjell Gunnar Gundersen, Richard Potvin
BACKGROUND: To compare near, intermediate, and distance vision, and quality of vision using appropriate subjective questionnaires, when monofocal or apodized diffractive multifocal intraocular lenses (IOLs) are binocularly implanted. METHODS: Patients with different binocular IOLs implanted were recruited after surgery and had their visual acuity tested, and quality of vision evaluated, at a single diagnostic visit between 3 and 8 months after second-eye surgery...
2013: Clinical Ophthalmology
E E Lutsevich, N N Podgornaia, T V Tikhomirova, Khaled Alhumidi
The article describes the results of conservative treatment of 78 patients with injuries of ocular adnexa (isolated fractures of orbital walls as well as cicatrical deformities of orbits and eyelids). Ophthalmological assessment was made both in the early and the late periods following blunt trauma. All patients underwent a standard assessment of functional ability of the eye and, additionally, an orbital computed tomography scan to characterize the fractures. In all cases physiotherapy (endonasal electrophoresis with proteolytic enzymes) was carried out to resolve the orbital hemorrhage...
July 2013: Vestnik Oftalmologii
Savleen Kaur, Sparshi Jain, Harsimrat B S Sodhi, Anju Rastogi, Kamlesh
Optic nerve hypoplasia (ONH) is a congenital anomaly of the optic disc that might result in moderate to severe vision loss in children. With a vast number of cases now being reported, the rarity of ONH is obviously now refuted. The major aspects of ophthalmic evaluation of an infant with possible ONH are visual assessment, fundus examination, and visual electrophysiology. Characteristically, the disc is small, there is a peripapillary double-ring sign, vascular tortuosity, and thinning of the nerve fiber layer...
May 2013: Oman Journal of Ophthalmology
P Veselý, S Synek
PURPOSE: The main goal of our study was to determine the database of parameters of simple binocular vision (SBV) in healthy adult population. Next goal was to verify current data of particular parameters of SBV. Recent public data (e.g. Divisova, Hromadkova) were determined without proper specification of examination (size of fusion object), or are too diffused (e.g. from 15 to 25 prismatic diopters = pD). At last we want to prove, if there are some other factors, which could influence parameters of SBV...
March 2013: Ceská a Slovenská Oftalmologie
A D Chuprov, K S Ivonin, A A Zamyrov, Iu V Kudriavtseva
Stereoscopic vision in patients after binocular implantation of different intraocular lens (IOL) models was evaluated. 24 patients (48 eyes) after cataract surgery were enrolled in the study. Follow-up was 12 months. 1st group included 9 patients (18 eyes) after cataract surgery and implantation of Russian trifocal refractive-diffractive IOL MIOL-Record 3. 2nd group included 6 patients (12 eyes) after cataract surgery and implantation of Russian bifocal refractive-diffractive IOL MIOL-Accord 3. 3rd group included 9 patients (12 eyes) after cataract surgery and implantation of Russian monofocal IOL MIOL-2...
January 2013: Vestnik Oftalmologii
Mohammad-Mehdi Parvaresh, Leila Ghiasian, Khalil Ghasemi Falavarjani, Mostafa Soltan Sanjari, Nadia Sadighi
PURPOSE: To determine normal values of standard full-field electroretinography (ERG) and to evaluate their variations with age in an Iranian population. METHODS: Through convenient sampling, 170 normal subjects 1-80 years of age were selected from residents of Tehran. ERG amplitudes and implicit time values were measured according to recommendations by the International Society for Clinical Electrophysiology of Vision. Evaluations consisted of light-adapted ERG including single-white flash and 30-Hz flicker response; and dark-adapted ERG including rod, maximal dark-adapted and cone responses...
April 2009: Journal of Ophthalmic & Vision Research
Patrick Quaid, Trefford Simpson
BACKGROUND: Approximately one in ten students aged 6 to 16 in Ontario (Canada) school boards have an individual education plan (IEP) in place due to various learning disabilities, many of which are specific to reading difficulties. The relationship between reading (specifically objectively determined reading speed and eye movement data), refractive error, and binocular vision related clinical measurements remain elusive. METHODS: One hundred patients were examined in this study (50 IEP and 50 controls, age range 6 to 16 years)...
January 2013: Graefe's Archive for Clinical and Experimental Ophthalmology
Dawn K Decarlo, Gerald McGwin, Karen Searcey, Liyan Gao, Marsha Snow, Lynne Stevens, Cynthia Owsley
PURPOSE: To evaluate prescribed optical device use in terms of frequency and perceived usefulness among people with age-related macular degeneration (AMD). We also sought to determine the tasks for which they were using their prescribed low vision device(s). METHODS: One hundred ninety-nine patients with AMD presenting for the first time to the low vision service were recruited from a university-based clinic. Prior to the low vision evaluation and device prescription, they completed the National Eye Institute Visual Function Questionnaire 25, Center for Epidemiological Studies Depression Scale, Short Portable Mental Status Questionnaire, and a general health questionnaire...
September 2012: Optometry and Vision Science: Official Publication of the American Academy of Optometry
Ruth Huna-Baron, Yoseph Glovinsky, Zohar Habot-Wilner
BACKGROUND: The aim of this work was to compare the specificity-sensitivity balance of the Hardy-Rand-Rittler (HRR) 4th edition with the Ishihara color plate tests for color-vision defects in patients with optic neuropathy. METHODS: This is a prospective case-control study. The study group included 43 patients (48 eyes) with newly diagnosed optic neuropathy, and the control group included 33 patients (33 right eyes) who were referred to the eye clinic for conditions other than optic nerve or retinal macular disorders...
February 2013: Graefe's Archive for Clinical and Experimental Ophthalmology
R K Shrestha, M R Joshi, S Shakya, R Ghising
INTRODUCTION: Color vision defect can be observed in various diseases of optic nerve and retina and also a significant number of people suffer from the inherited condition of red and green color defect. METHODS: A cross-sectional descriptive study was designed with purposive sampling of students from various schools of Kathmandu Valley. All children were subjected to color vision evaluation using Ishihara Isochromatic color plates along with other examination to rule out any other causes for color deficiency...
October 2010: JNMA; Journal of the Nepal Medical Association
Hilda Capo, Michael X Repka, Jane C Edmond, Arlene V Drack, Louis Blumenfeld, R Michael Siatkowski
Evaluation of children with optic nerve abnormalities is challenging. Fundus photography, ocular coherence tomography, visual field testing, color vision evaluation, neuroimaging, and genetic testing are helpful in the diagnosis and management of these patients. Importantly, many optic nerve problems are not isolated but occur in association with systemic and central nervous system anomalies. The ophthalmologist thus plays a critical role in recognizing patients who warrant systemic and neurologic assessment...
June 2011: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
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"