XML 28 R6.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Statements of Changes in Stockholders’ Equity (Parenthetical) | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($)
Proceeds Of Stock Issued During Period Gross | $ 6,409,651
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $ 41,958

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

X
- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration