To analyze the clinical application and obstacle avoidance effect of Peli prism in hemianopia patients and related influencing factors, so as to provide reference for clinical fitting and rehabilitation training.

In this retrospective survey investigation, judgmental sampling was used to continuously recruit 19 patients with homonymous hemianopia who visited the Vision Rehabilitation and Low Vision Center of Eye Hospital affiliated to Wenzhou Medical University from December 2020 to June 2022. The clinical fitting situation and usage of Peli prism, satisfaction of patients and reason for abandonment were collected and analyzed by telephone follow-up interview.

13 cases of 19 homonymous hemianopia patients clinically accepted Peli prism, including 9 males and 4 females, aged from 20 to 79 years old. The primary diseases were stroke (4 cases) and postoperative arteriovenous malformation (3 cases). Among the 6 patients who refused prism, there were 4 males and 2 females, aged from 65 to 80 years old, and the primary diseases were all strokes. Thirteen patients who received prisms could benefit from walking. Six cases of 13 clinically accepted patients were satisfied about wearing the prism for half a year, and 4 cases were the clinically successful. The reasons for abandonment of 9 patients were mainly due to the difficulty in adapting to visual confusion (7/9) and no or insufficient expansion of the visual field (6/9).

The clinical acceptance rate of Peli prism for patients with hemianopia is 13/19, and the clinical success rate after wearing the prism for six months is 4/13. The use of Peli prism as an adjunctive aid improves obstacle avoidance ability in mobile scenarios for patients with hemianopia. Factors such as old age, stroke history, and lack of adaptive training may affect the clinical acceptance or success rate.

prism; visual field rehabilitation of homonymous hemianopia; clinical acceptance; clinical success; influencing factors