Relative risk (RR) for visual field loss by motion impairment using crude 5 year cumulative incidence
| Motion impairment | No of patients | Visual field 5 years cumulative loss | RR (95% CI) | p Value |
|---|---|---|---|---|
| No (>85%) | 51 | 4 (7.8%) | ||
| Yes (⩽85%) | 27 | 14 (52%) | 6.6 (2.41 to 18.13) | <0.001 |