View clinical trials related to Vision, Low.
Filter by:This project is working on orthoptic rehabilitation for low vision people. The aim of the project is to assess the interest and integration of this rehabilitation device used at home, in low-vision private practice and at the hospital. It leads to develop and evaluate an innovative device to integrate and adjust monitoring of patients according to their need and their progress, to create new interactions with the patient, enabling the orthoptist to stay in touch with his patient at home between rehabilitation sessions and to obtain a more fine and objective analysis of the exercises done by the patient. Using an eye tracker and a digital tactile screen with data uploads allows the practitioner to observe the progress objectively. It also leads the patient to a better understanding of his/her visual behavior and of the effects of rehabilitation. Therefore, it will be easier to adopt better strategies.
The aim of this study is to obtain an early biomarker of amyotrophic lateral sclerosis and Friedreich's Ataxia which allows to diagnose the disease in an initial stage and to follow up the patient with optic coherence tomography, a fast, non-invasive and comfortable method
Elderly with visual impairment (VI) who undergo community eye screening often do not attend tertiary follow-up even if significant eye diseases are detected. Investigators evaluate an incentive-care scheme (ICS) to improve the attendance rates of tertiary eye-care visits of participants following community eye screening.
The purpose of this study is to evaluate how visual acuity assessed with Peek Acuity (a cell phone application to check visual acuity) among preschool and school-aged children 3 to less than18 years of age (1) compares to the standard visual acuity exam in the ophthalmology clinic and (2) performs as a screening test for ocular abnormalities that warrant referral for an eye exam.
The effect of tinted filters and illumination on the visual performance of patients with low vision (i.e., individuals with reduced vision that is uncorrectable with glasses, surgery or treatments) has been a topic of research and discussion for many years, yet there is no current consensus or practice standard for the evaluation and recommendation of colored filters and/or illumination intensity. Anecdotally, there have been many subjective reports of improvement in visual function and comfort with the use of tinted lenses. Previous studies have attempted to elucidate the subjective improvements observed using vision tests, such as visual acuity and contrast sensitivity, and the findings have been inconsistent. Traditionally, filters and optimal illumination are prescribed clinically through a trial and error method, which involves trying various filters and lamps haphazardly to determine which if any are preferred by the patient. The investigators are proposing to evaluate whether the illumination and filters chosen in office by participants using a new assessment tool the LuxIQ/2 translate to overall patient comfort and improved speed, accuracy and print size while reading, and to evaluate whether participants have the same illumination and colored filter preference determined by the LuxIQ/2 in a clinical office setting and in their home environment. The investigators will evaluate whether participants prefer lighting determined by the new assessment tool the LuxIQ/2 in comparison to lighting determined by the OttLite Cobra in office.
This pilot study will integrate multi-sensor fusion techniques (software) to effectively combine information obtained from the newly embedded infrared, ultrasound, and stereo-camera-based sensor systems (hardware) that are implemented into the VIS4ION platform. The core of this technology is based on 4 components: (1) a wearable vest with several distinct range and image sensors embedded. These sensors extract pertinent information about obstacles and the environment, which are conveyed to (2) a haptic interface (belt) that communicates this spatial information to the end-user in real-time via an intuitive, ergonomic and personalized vibrotactile re-display along the torso. (3) A smartphone serves as a connectivity gateway and coordinates the core components through WiFi, bluetooth, and/or 4G LTE, (4) a headset that contains both binaural, open-ear, bone conduction speakers (leaving the ear canal patent for ambient sounds) and a microphone for oral communication-based voice recognition during use of a virtual personal assistant (VPA). Blindfolded-sighted, and blind subjects in a real-world, combined obstacle avoidance / navigation task will serve as an independent measure of overall improvements in the system as well as a roadmap for future avenues to enhance performance. Further, a prospective, randomized crossover, controlled, non-blinded phase will be conducted in Thailand as part of this study to compare and evaluate effectiveness of the wearable vest for increasing navigation and quality of life.
To evaluate health related quality of life (HRQoL) of low-vision patients and their care givers undergoing low-vision rehabilitation program (LVRP).
This study will train participants (young people and older adults) to do a visual task, and will assess whether this results in changes in behavioral assessments. In some participants, we will be also testing whether MRI measures (cortical thickness, functional connectivity) change with training.
Age-related macular degeneration (AMD) is a condition affecting 20 to 25 million people worldwide. Symptoms of AMD includes difficulty in reading, recognizing faces and completing house work which may result in increased disability which in turn increase symptoms of depression and anxiety. Depression and anxiety could also be worsened by social isolation caused by AMD. Further, AMD causes high levels of emotional distress and reduced quality of life (QoL). Automatic Self Transcending Meditation (ASTM) - a standardized category of meditation - may help reduce stress, depression, anxiety, and may enhance QoL. Automatic Self Transcending Meditation (ASTM) is a class of meditation that helps quiet the mind and induces physiological and mental relaxation whilst the eyes are shut. It utilizes a specific sound value (mantra) to draw attention inward and permit the mind to experience a restful but alert state of consciousness. In the proposed research, the effects of ASTM on health related quality of Life (HRQoL), depression and anxiety in low-vision AMD patients will be studied. A single-center, single-blind longitudinal randomized controlled trial (RCT) will be conducted in London, ON. Patients with AMD (n = 140, 70 in each arm) will be randomized to ASTM plus treatment as usual (TAU) or TAU alone (control) arm. Data on routinely measured ophthalmic clinical variables, HRQoL, depression, and anxiety will be collected from both the arms. Statistical analysis will be conducted using STATA 15.0 to evaluate the effects of ASTM plus TAU compared to TAU alone on HRQoL, depression, and anxiety. Further, for each group - ASTM plus TAU and TAU alone - the investigators develop an association between HRQoL, depression, and anxiety with routinely measured clinical variables using mathematical models.
The purpose of this research is to collect preliminary data in preparation for conducting a randomized clinical trial to determine the relative effectiveness of vision rehabilitation in improving overall visual ability (primary aim) and reducing depression (secondary aim) in patients receiving anti-VEGF therapy for neovascular age-related macular degeneration integrated over time.