NCT06674369

Ongoing Effect of Expansion Prisms Following the Discontinuation of Use on Visual Field Enlargement and Retrograde Ganglion Cell Degeneration in Homonymous Hemianopia Patients

Timlioğlu İper H.S1, Sahli.E2, İdil Ş.A3,Önal.R.E4 1 PhD.MD Opht.İstanbul Okan University ,ophthalmology and Opticianry ,ORCİD:0000-0003-2112-0602 2 PhD.MD Opht. Ankara University Faculty of Medicine, Low Vision Rehabilitation and Research Center, Department of Ophthalmology, Ankara, Turkey ORCİD:0000-0002-1355-7284 3 MD Opht. Professor. Ankara University Faculty of Medicine, Low Vision Rehabilitation and Research Center, Department of Ophtha

• Status: Active Not Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 15 (actual)
• Sponsor: Okan University · Academic / Other
• Sex: All
• Age: 18 Months – 55 Months
• Healthy volunteers: Not accepted

Summary

The goal of this observational study is to learn about the long-term effects of Pelli prism in Hemianopia patients who take Prisms for awareness of the area they cannot see. The main question it aims to answer is: Does the field enlargement observed with the prism continues after the prism is removed? Participants already using Peli prisms as part of their regular medical care for Hemianopia, in the upcoming routine controls their field of vision enlargements will be examined.

Detailed description

Hemianopia is a disability-causing condition that usually affects young to middle-aged people and reduces quality of life.Prism applications are one of the rehabilitation methods used to improve the quality of life of these people and ensure their participation in daily life. The Peli prism is the most commonly used prism type. The effect of prism applications is thought to be temporary.The main idea of our study is that Prisms can create longlasting effects by affecting neuroplasticity.

Conditions

• Homonymous Hemianopsia

Interventions

Type	Name	Description
DEVICE	Peli prism for hemianopia	Peli prism uses high-powered prisms (40 Dioptre) that expand a hemianopic patient's awareness of their blind side. This awareness enables patients to better detect obstacles and navigate around them. Effect of the prism considered as temporary We investigated whether the effect persists after the prism is removed.To understand the persistence of the effect, we examined the changes in the visual field with CVF (Computerized visual field examination)before the prism was applied, with the prism and 1 week after the prism was removed.

Timeline

• Start date: 2022-08-28
• Primary completion: 2022-10-18
• Completion: 2024-10-30
• First posted: 2024-11-05
• Last updated: 2024-11-05

Locations

1 site across 1 country: Turkey (Türkiye)