XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.21.2

Related Party Transactions (Details) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 15, 2020 USD ($) | Sep. 15, 2018 USD ($) | Sep. 15, 2016 USD ($) ft² | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2015 | Dec. 31, 2020 USD ($)
Security Deposit |  |  |  | $ 119,035 |  | $ 119,035 |  |  | $ 119,035
License Agreement |  |  |  |  |  |  |  |  |
Minority Interest Ownership Percentage In Company |  |  |  |  |  |  |  | 5.00% |
Vice President of Research and Development |  |  |  |  |  |  |  |  |
Net Rentable Area | ft² |  |  | 953 |  |  |  |  |  |
Lease, Monthly Base Rent | $ 5,404 | $ 4,012 | $ 3,895 |  |  |  |  |  |
Operating Leases, Rent Expense |  |  |  | 16,212 | $ 15,494 | 32,424 | $ 27,530 |  |
Security Deposit | $ 5,404 | $ 4,012 | $ 3,895 |  |  |  |  |  |
Leasehold Improvements, Gross |  |  |  | $ 82,500 |  | $ 82,500 |  |  |
Senju Pharmaceutical Co |  |  |  |  |  |  |  |  |
Royalty Percentage |  |  |  |  |  |  |  | 5.00% |

X
- Definition The base rent per month for lease. + References No definition available. + Details
Name: | eyen_LeaseMonthlyBaseRent
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents the percentage rate of royalty. + References No definition available. + Details
Name: | eyen_RoyaltyPercentage
Namespace Prefix: | eyen_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121566466&loc=d3e6812-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_LeaseholdImprovementsGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Net rentable area for properties owned. + References No definition available. + Details
Name: | us-gaap_NetRentableArea
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_SecurityDeposit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_OwnershipAxis=eyen_LicenseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=eyen_VicePresidentOfResearchAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=eyen_SenjuPharmaceuticalCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |