An Exploratory Study of Visual Function Rehabilitation in Patients With Ocular Trauma

Eye Injuries Clinical Trial

Official title: An Exploratory Study of Visual Function Rehabilitation in Patients With Ocular Trauma

Status Not yet recruiting

Clinical Trial Summary

Ocular trauma is one of the leading causes of blindness worldwide, often resulting in severe visual impairment or even loss of vision after injury.

Although after powerful surgical treatment, there are still some patients whose visual function is difficult to improve, and the patients with eye trauma lack effective vision rehabilitation therapy.Therefore, the research on visual function rehabilitation of patients with ocular trauma needs to be further carried out . Perceptual learning is based on cortical remodeling, repetitive visual task training. This training is to perform a series of repetitive visual tasks through the Gabor patch, simulating the receptive field structure of simple cells in the primary visual cortex (V1 area), "awakening visual cells", and improving the visual processing ability of the cerebral cortex. Compared with the traditional vision rehabilitation therapy, perceptual learning optimizes the visual quality at the visual center level. It is an innovative therapy, having the potential to solve the visual function of patients with eye trauma. This study intends to explore new visual rehabilitation methods for patients with ocular trauma, and explore the changes in visual cortical function and area of patients after perceptual training.

Clinical Trial Description

Perceptual training is a type of perceptual learning that initiates neural modifications during continuous repetitive task training, thereby increasing neural efficiency and improving the visual processing capabilities of the cerebral cortex. The perceptual training program simulates the receptive field structure of simple cells in the primary visual cortex (area V1) through Gabor cursors and lateral occlusion techniques to awaken visual cells during repetitive visual tasks. Gabor Patches are targeted stimuli that are widely used in the field of optic neurology to produce highly effective stimulation of the primary visual cortex. Lateral shading technology can effectively stimulate specific neurons. It can not only improve the interaction of neurons in the cerebral cortex in patients with amblyopia, but also stimulate the cooperation of neurons. This technology has also been proved to be effective in normal people. Therefore, on the basis of this theory, we plan to use perceptual learning to conduct repetitive visual stimulation for three months, and return to visit three times within three months. The main indicator is contrast sensitivity, and the efficacy of perceptual learning is evaluated by evaluating the improvement of contrast sensitivity. The study was designed as a self-controlled before-and-after trial. Volunteers were recruited from the outpatients of Zhongshan Ophthalmic Center's ophthalmic trauma clinic to participate in the study. ;

Related Conditions & MeSH terms

• Eye Injuries

• NCT number: NCT06174415
• Study type: Interventional
• Source: Zhongshan Ophthalmic Center, Sun Yat-sen University
• Contact: WANQI QIAN
• Phone: 0086-15765304712
• Email: qianwanqi618@gmail.com
• Status: Not yet recruiting
• Phase: N/A
• Start date: December 30, 2023
• Completion date: April 30, 2024