XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Intangible Assets (Details) - USD ($) |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 11, 2024 | Aug. 15, 2023 | Mar. 31, 2024
Intangible Assets |  |  |
Accrual for intangible asset milestone obligations |  |  | $ 4,000,000
License | Formosa Pharmaceuticals Inc |  |  |
Intangible Assets |  |  |
Percentage of product approved by FDA |  | 0.05% |
Upfront payment |  | $ 2,000,000.0 |
Upfront payment paid in cash |  | $ 1,000,000.0 |
Issuance of common stock as consideration for licensing agreement (in shares) |  | 487,805 |
Issuance of common stock as consideration for licensing agreement |  | $ 1,000,000.0 |
Legal expenses capitalized |  | 122,945 |
Maximum amount payable upon achievement of certain sales milestones |  | $ 80,000,000.0 |
Initial development milestone payment which trigger FDA approval | $ 2,000,000.0 |  | 2,000,000.0
License agreement payment period | 45 days |  |
Accrual for intangible asset milestone obligations |  |  | $ 2,000,000.0

X
- Definition Amount of accrual related to intangible asset recorded in milestone obligation as part of non-cash investing and financing activity. + References No definition available. + Details
Name: | eyen_AccrualForIntangibleAssetsMilestoneObligation
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of initial development milestone payment which trigger FDA approval. + References No definition available. + Details
Name: | eyen_InitialDevelopmentMilestonePaymentTriggerForFdaApproval
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Legal expenses capitalized. + References No definition available. + Details
Name: | eyen_LegalExpensesCapitalized
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Period when payment has to be made related to the license agreement from the effective date in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | eyen_LicenseAgreementPaymentPeriod
Namespace Prefix: | eyen_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum amount payable upon achievement of certain sales milestones. + References No definition available. + Details
Name: | eyen_MaximumAmountPayableUponAchievementOfCertainSalesMilestones
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percentage of product approved by FDA. + References No definition available. + Details
Name: | eyen_PercentageOfProductApprovedByFda
Namespace Prefix: | eyen_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represent stock issued period shares licensing agreements. + References No definition available. + Details
Name: | eyen_StockIssuedDuringPeriodSharesLicensingAgreements
Namespace Prefix: | eyen_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represent stock issued during period value licensing agreements. + References No definition available. + Details
Name: | eyen_StockIssuedDuringPeriodValueLicensingAgreements
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of upfront payment made. + References No definition available. + Details
Name: | eyen_UpfrontPayment
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Upfront payment paid in cash + References No definition available. + Details
Name: | eyen_UpfrontPaymentPaidInCash
Namespace Prefix: | eyen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LicensingAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=eyen_FormosaPharmaceuticalsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |