Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
DEXYCU [Member]
Schedule Of Significant Accounting Policies [Line Items]
Accrued revenue-based royalty expense	$ 1,000	$ 674,000

Schedule Of Significant Accounting Policies [Line Items]

No definition available.

Name:	eypt_ScheduleOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	eypt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration