Visual Field Loss

The BRIGHT (Behavioral Rehabilitation Through Image-Guided Home-based Training) study aims to evaluate the effectiveness of image-guided, home-based perceptual training at improving visual performance in individuals with visual field loss. Using a prospective, crossover design, BRIGHT combines visual behavioral testing, neuroimaging, and a home-based intervention. It aims to 1) identify neural pathways that support training-induced visual plasticity; and 2) compare the efficacy of different types of visual training delivered in a home-based setting.

The goal of this clinical trial is to learn if vision training works to improve functional vision in people with visual field loss after stroke. The investigators want to know more about how people perceive their own functional vision and ability to compensate for visual field loss in daily activities. The main questions the study aims to answer are: * Does vision training improve dimensions of functional vision? * How does vision training affect the participants's perception of functional vision and the ability to compensate for visual field loss? Researchers will compare the effect of home-based vision training to standard care (no vision training) on functional vision. Participants will: * Participate in home-based vision training or standard care for 8 weeks * Be contacted once a week by phone * Keep a training diary

The goal of this clinical trial is to learn if visual restoration therapy (VRT) (a type of treatment that aims to improve vision) works to the visual rehabilitation of patients with visual field defects. It will also learn about the safety of VRT. The main questions it aims to answer are: * Can visual reconstruction therapy help expand the visual field in patients with visual field defects? * What medical problems do patients with visual field defects experience during the procedure of VRT? Researchers will look at how patients with visual field defects who use a visual aid in combination with VRT and those who use a visual aid only, compare the visual field expansion at three months to see how well visual reconstruction therapy works. Participants will: * will undergo a specialized visual function assessment and be provided with a pair of appropriate vision aids. * Visit the clinic at one month and three months after enrolment for review of visual function and completion of a Chinese-version Low Vision Quality of Life (CLVQOL) questionnaire. * Participants receiving VRT will additionally undergo 30 minutes of VRT three times per week for 3 months. * Keep a diary for their symptoms and severity and frequency of occurrence during treatment.

Acquired brain injury" refers to brain damage that impacts neurological processing, making daily activities challenging and often causing vision issues like binocular dysfunction, oculomotor problems, and visual field loss. In Spain, visual rehabilitation is limited, although it is more common in other countries. These patients generally need an interdisciplinary approach involving professionals like physiotherapists and optometrists and often face mobility, balance, and spatial perception difficulties. Treatment tools include lenses, prisms, and technologies like virtual reality (VR). The Visionary VR program, presented by Dr. Portela, has shown promising results in visual field recovery by stimulating the affected area. Visual rehabilitation is based on brain plasticity and involves three key strategies: Prisms to expand the visual field. Compensatory therapy to improve eye movement. Restitution therapy to restore the visual field.