Research Article: The Outbreak of Acute Primary Angle-Closure Cases During the COVID- Omicron Variant Pandemic at a Tertiary Eye Center in Shanghai
Introduction:
Coronavirus disease (COVID-) is an infectious disease caused by severe acute respiratory syndrome coronavirus (SARS-CoV-). It was first identified in December and has spread rapidly around the world. – Due to the strict preventive measures implemented in Shanghai, the COVID- infection rate was very low until the preventive measures were lifted in early December . From mid-December to mid-January , the population of COVID- Omicron variant infection increased dramatically and dropped gradually in Shanghai.
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