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Condensed Statements of Cash Flows (Parenthetical)	6 Months Ended
	Jun. 30, 2020 USD ($)
Private Placement
Proceeds Of Stock Issued During Period Gross	$ 5,984,931
Payments of Debt Issuance Costs	$ 415,795

X

- Definition

It represents issuance of preferred stocks identified as being convertible into another form of financial instrument, typically the entity's common stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	eyen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: