Abstract:

Medical delay （including pre-hospital and in-hospital delay） is the main cause for the low thrombolytic rate in patients with central retinal artery occlusion. In this paper，we described the concept of medical delay and reviewed the influencing factors. The influencing factors of prehospital delay included demographic factors，symptom perception level，awareness and related knowledge level，visit and transport mode. Through reviewing，limited and inadequate medical resources，incomplete inter-hospital referral system，and lack of standardized treatment procedures were found to be the factors affecting in-hospital delay. After analysis，this paper suggested that sudden painless vision loss in one eye should be included in prehospital stroke assessment to improve public recognition of the disease. Besides，constructing the green channel of central retinal artery occlusion，speeding up the pre-diagnosis triage，diagnosis and treatment，shortening the time from door to needle were recommended to provide reference for improving the medical delay of patients with central retinal artery occlusion in the future.

Key words: Central retinal artery occlusion, Medical delay, Literature Review