Company Description and Summary of Significant Accounting Policies, Nature of Business (Details)	3 Months Ended
Mar. 31, 2022 Product
Nature of Business [Abstract]
Number of small molecule product candidates	2

The number of small molecule product candidates targeting front and back of the eye indications.

No definition available.

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Namespace Prefix:	ocup_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration