In this group of patients with AD, comorbidity increased the rate of cognitive decline. Considering comorbidity instead of focusing on separate conditions may be more helpful in managing AD.

As the incidence of PVD increases with age, and ECT is used more frequently in elderly people with depression, we recommend paying attention to ophthalmic symptoms as part of the routine clinical monitoring of ECT side effects. If ophthalmic symptoms occur, the risks and benefits of ECT need to be weighed up including consultation with an ophthalmologist.