Group 2,accommodative changes were compared using cycloplegic doses of 2 drops(5 min interval) with that of 4 drops.

• 且调节变化在点药后稳定 ；差异有显著性(P <0 .；0 5 ) ; 点 2次药和点 4次药后 30min时的调节变化比收稿日期 :2 0 0 4-0 8-0 2 ;