Low vision among patients currently receiving outpatient care at Tohoku University Hospital
Conditions
Interventions
Retinal-projection visual aid
Sponsors
Tohoku University
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: (1) Blindness, according to the WHO (World Health Organization) definition as corrected visual acuity of less than 0.05 in the better eye or a corresponding visual field defect (i.e., a visual field of 10 degrees or less), or low vision, defined as corrected visual acuity of 0.05 or higher but less than 0.3 in the better eye. This includes individuals with visual impairments equivalent to these criteria who experience difficulties in daily life, individuals with visual impairments equivalent to those covered by a visual impairment certificate, and individuals who qualify for receiving low vision care that uses their remaining visual function (excluding care related to the use of Braille). (2) Age 12 to 70 years (at the time of registration). (3) Consent to participate in the study from either the participant or their family.
Exclusion criteria
Exclusion criteria: (1) Difficulty operating the retinal projection visual aid device; (2) lack of ability to understand the content of examinations or questionnaires; (3) no remaining function in the retina or optic nerve; (4) current use of medications or other treatments designed to enhance retinal sensitivity; (5) history of photosensitivity.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual acuity using the ETDRS chart. | — |
Secondary
| Measure | Time frame |
|---|---|
| Reading acuity, maximum reading speed, and critical print size, measured using MNRead-J; decimal visual acuity; the visual field; medical conditions; possession and grade of disability certificate; type of low-vision aid; assessment of peripheral object recognition; and System Usability Scale score | — |
Countries
Japan
Contacts
Public ContactIkumi Takatsu
Tohoku University Hospital Department of Ophthalmology
Outcome results
None listed