Patient no. Baseline score At 3 months 1. 0.75 1.05 2. 0.45 1.20 3. 0.90 1.05 4. 0.90 1.20 5. 0.75 1.05 6. 0.90 1.20 7. 0.90 1.20 8. 0.90 1.05 9. 0.60 1.05 10. 0.90 1.20 11. 0.75 1.05 12. 0.75 1.05 13. 0.90 1.05 14. 0.75 1.05 15. 0.90 1.20

Table 5: Contrast sensitivity score in observation group