Inventory (Details Narrative)	9 Months Ended
Sep. 30, 2021 USD ($)
Inventory Disclosure [Abstract]
Inventory write down	$ 45,000

Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

No definition available.

Name:	OPTI_InventoriesWriteDown
Namespace Prefix:	OPTI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration