英语语法分析

The objective is to evaluate the effect of the use of oxybuprocaine for pain relief.

目的是研究奥布卡因的止疼作用。

Objective:To evaluate the effect of the combined use of a combination of topical oxybuprocaine and bupivacaine drops and contact lens for pain relief after PRK.

目的：探讨奥布卡因与布比卡因混合液联合角膜接触镜对PRK术后疼痛的治疗作用。