Fig. 2: Tornado diagram for the incremental cost-effectiveness ratio of prophylactic LPI compared with that of observation.

The red bar shows the variation on increasing the parameter. The blue bar shows the variation on decreasing the parameter. The upper parameters had a greater impact on the incremental cost-effectiveness ratio. LPI laser peripheral iridotomy, PACS primary angle-closure suspect, PAC primary angle-closure, PACG primary angle-closure glaucoma, AACC acute angle-closure crisis.