Abstract：
A middle-aged patient who had bilateral penetrating keratoplasty 20 years ago for keratoconus presented with pain and blurriness of the right eye for 2 days. Despite prompt corticosteroid therapy, they had no vision improvement and reported occasional pain. What would you do next?
摘要：
20年前因圆锥角膜行双侧穿透性角膜移植术的中年患者，出现右眼疼痛和模糊2天。尽管及时进行皮质类固醇治疗，他们没有视力改善,并报告偶有疼痛.你接下来会做什么？
