This study is testing different types of high-power prisms. These prisms are designed to help people with visual field loss (hemianopia, tunnel vision, or other visual field defects) see better by shifting images from blind spots into areas where they can still see. The goal is to help you detect obstacles more easily when walking. Researchers want to find the best prism designs and how to fit them for future studies. You might be able to join if you are between 7 and 80 years old, have visual field loss, and your vision in your better eye is at least 20/50. You also need to be healthy enough for 2-4 hour sessions, able to walk short distances, and speak English. The study aims to enroll 20 participants, but its current recruitment status is unclear. Success will be measured by how much your field of vision expands over about four months.

Study design

This is an interventional study involving about 20 participants. It is testing different high-power prism configurations.

What's involved

You would have multiple visits, typically four, to Schepens Eye Research Institute for fitting and testing with the prism glasses. Each session would last 2-4 hours.

Compensation

Not stated in the trial record.

Follow-up

Your field of view expansion will be measured through study completion, which is an average of four months.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.