30 patients will receive Virtual reality training in addition to balance exercise program. for 30 minutes, 3 days/ week for 8 weeks.

30 patients will receive balance exercise program. for 30 minutes, 3 days/ week for 8 weeks.

Virtual reality balance training will be completed using the BRU system's preloaded programs for postural training and rehabilitation. Rehabilitation exercises will include tasks performed standing with virtual reality headset on whereby the visual and vestibular systems will be stressed and will be customized according to the participant's needs and ability to tolerate the training stimulus. Postural training exercises will be used to develop limits of stability, with 3 exercises performed requiring participants to move their center of mass to collect rings/blocks through a course within a given amount of time. Each of the 3 postural training exercises contained 15 levels of varying difficulty. Sessions will be tailored to everyone, with progression of increasing the level of difficulty or time of exposure for each exercise. Participants at this group will be also participate in a Balance exercise training program for 40 min/3 times per week for 8 weeks.

Single-Leg Stance Test on Firm and Foam Surfaces Participants were asked to stand on 1 leg with eyes open on firm and foam surfaces for as long as possible; the time in seconds was recorded using a stopwatch. Participants completed 3 trials on each leg, and a mean score was calculated for each leg. Rest was permitted between each trial. The test was terminated when (1) the raised foot touched the stance leg or the floor, (2) the participant hopped, and (3) the arm touched a support surface or the investigator. The dominant leg was indicated by the preferred foot when kicking a ball. This test has shown excellent test-retest reliability among healthy older adults, and predictive validity in older adults with Parkinson disease. A cutoff of <10 seconds has discriminated between fallers and non-fallers with Parkinson disease

The Biodex Balance System (Biodex Medical System, Inc., Shirley, NY, USA) will be used to measure anteroposterior, mediolateral, and overall stability indices. Postural balance assessment will evaluate the participant's ability to regulate the platform's tilt angle, with deviations from the centre using standard deviation instead of the mean. Each test will last 20 seconds, with a 10-minute rest between three trials. The Biodex Balance System is reported to have high reliability