We put cotton pellets which were dipped in 0.04% mitomycin solution on conjunctiva about 3 minutes, then douche conjunctival sac by 20 ml isotonic Na chloride.

• 用一块经0.；04%25丝裂霉素溶液浸泡过的棉片；填压在结膜下3分钟；然后用20mL生理盐水充分冲洗。