With the help of the data of the clinic's electronic medical record system (IS-H/i.s.h.med from SAP, Cerner Corporation, North Kansas City, MO, United States of America and SAP SE, Walldorf, Germany) and the time recording and management software TimeElement (Hannover Medical School, Hannover, Germany), which was codeveloped at our clinic, all patient contacts of the COVID-19 shutdown were evaluated over a period of approximately 7 weeks from 18 March 2020 to 8 May 2020 and compared with the same period in 2019.  In addition, quarterly revenues for the first and second quarters of 2019 and 2020 were put into perspective via SAP.



SAP
With the help of the data of the clinic's electronic medical record system (IS-H/i.s.h.med from SAP, Cerner Corporation, North Kansas City, MO, United States of America and SAP SE, Walldorf, Germany) and the time recording and management software TimeElement (Hannover Medical School, Hannover, Germany), which was codeveloped at our clinic, all patient contacts of the COVID-19 shutdown were evaluated over a period of approximately 7 weeks from 18 March 2020 to 8 May 2020 and compared with the same period in 2019. 
Cerner Corporation
With the help of the data of the clinic's electronic medical record system (IS-H/i.s.h.med from SAP, Cerner Corporation, North Kansas City, MO, United States of America and SAP SE, Walldorf, Germany) and the time recording and management software TimeElement (Hannover Medical School, Hannover, Germany), which was codeveloped at our clinic, all patient contacts of the COVID-19 shutdown were evaluated over a period of approximately 7 weeks from 18 March 2020 to 8 May 2020 and compared with the same period in 2019.  Via TimeElement there was a 69.4% decrease in all special diagnostic services, with visual field examinations in particular also reduced by 75.3%. 
TimeElement