Virtual reality application and person-centered occupational therapy intervention were applied to the virtual reality intervention group. VR intervention was implemented in a 30 m2 virtual reality unit using a PC Microsoft Kinect and a screen (50" flat LED screen TV) located approximately 1.5 meters away. Kinect can monitor the client's movements in the VR environment in real time by displaying them on the screen. In our study, before starting VR interventions, suitable games for intervention were determined by analyzing which skills each game required and which skills it could develop. Before starting the VR intervention, clients were informed about the games and shown how to play them.

Person-centered occupational therapy intervention was applied to both groups according to the evaluation results. The basis of the person-centered occupational therapy intervention is the activities and visual skills that the participants stated in the COPM in the first evaluation and in which they had problems. Person-centered occupational therapy intervention consists of 5 stages: (1) person-centered goal setting, (2) creation of the therapy plan, (3) implementation of interventions, (4) evaluation of results, and (5) obtaining feedback.

Person-centred Occupational Therapy Intervention

The Motor Skill Independent Visual Perception Test-4 (MVPT-4) is a standardised test (α= 0.80, r=0.53) that assesses visual perception skills without requiring motor or verbal responses. The test consists of 45 items and takes approximately 20 minutes. 4- It can be used in 85+ people. MVPT-4 evaluates five categories of visual perception: visual discrimination, spatial relationship, visual memory, shape-ground, visual proximity. The test result is determined by subtracting the total number of 45. The higher the score, the better the visual perception skill is interpreted.

COPM, which is most frequently used among occupational therapists, is a standardised measurement tool used to determine the individual's activity performance problems and to measure performance satisfaction. In the COPM, which is a semi-structured interview, individuals evaluate their activity preferences with performance and satisfaction scores given by themselves. Individuals are asked about their activity performance problems and concerns about 3 areas including self-care, productivity and leisure time activities. Up to three problems can be identified in each activity area (self-care, productivity, leisure). Performance and satisfaction scores are again determined by the individual between 1 and 10 points. The Turkish adaptation, validity and reliability study of the COPM was conducted by Torpil et al.

In form A; before the test starts, the numbers from 1 to 8 on the sample application form of the test are asked to be drawn in a way to be followed in order. After the trial test, the participants are asked to combine the numbers from 1 to 25 against time and the time is recorded in seconds when the test is completed. The Turkish validation of the TMT-A was performed by Cangöz et al. The ICC values of the test were found to be 0.78 and 0.99, respectively. In form B, the test consists of a series of circles numbered between 1-13 and circles with letters from A to L on a piece of paper. The person is asked to proceed by matching the numbers and letters from number to letter. The time (in seconds) to complete the combination constitutes the score for the test. The ICC values of the test, which was validated in Turkish by Cangöz et al. were found to be 0.73 and 0.93, respectively.