Actuarial Loss On Post Employment Benefit Obligations Actuarial loss on post employment benefit obligations. Fair value adjustment on warrant liabilities Fair value adjustment on warrant liabilities. Finance income (cost) General and administrative expense Tax expense (income) Loss per share [Abstract] Loss per share [abstract]. Merger and listing expense Merger and listing expense Merger and listing expense. Operating expense Research and development expense Revenue and other operating income Convertible Loan Agreements [Member] Convertible loan agreements. European Biotech Acquisition Corp [Member] European biotech acquisition corp. Legacy Oculis [Member] Legacy Oculis. PIPE Financing [Member] PIPE financing. Public Offering [Member] Public offering. Registered Direct Offering [Member] Registered direct offering. Actuarial Gain Loss On Post Employment Benefit Obligations [Member] Actuarial gain loss on post employment benefit obligations. Conversion Of Legacy Oculis Long Term Financial Debt Into Oculis Ordinary Shares Conversion of legacy oculis long-term financial debt into oculis ordinary shares. Conversion Of Legacy Oculis Long Term Financial Debt Into Oculis Ordinary Shares Value Conversion of legacy oculis long-term financial debt into oculis ordinary shares. Increase Decrease Through Treasury Share Transactions Shares Increase decrease through treasury share transactions shares. Increase Decrease Through Vesting Of Earnout Shares Equity Shares Increase decrease through vesting of earnout shares equity shares. Issuance Of Shares In Connection With Warrant Exercises Shares Issuance of shares in connection with warrant exercises shares. Share issue related cost Transaction Costs Related To The Business Combination Transaction costs related to the business combination. Transaction Costs Related To The Business Combination Shares Transaction costs related to the business combination shares. Transaction Costs Related To The Issuance Of Ordinary Shares Transaction Costs Related To The Issuance Of Ordinary Shares Transaction costs related to the issuance of ordinary shares. Vesting Of Earnout Shares Vesting of earnout shares. Cash flows from (used in) financing activities Interest paid, classified as financing activities Payments of lease liabilities, classified as financing activities Proceeds From EBAC Nonredeemed Shareholders Proceeds from ebac non-redeemed shareholders. Proceeds From The Shares Issued To CLA Investors Proceeds from the shares issued to cla investors . Proceeds From The Shares Issued To PIPE Investors Proceeds from the shares issued to pipe investors. Transaction Costs Related To Financing Activities Transaction Costs Related To Financing Activities Transaction costs related to financing activities. Transactions Cost Related To Business Combination Agreement Transactions Cost Related To Business Combination Agreement Transactions cost related to business combination agreement. Cash flows from (used in) investing activities Payment For Short Term Financial Assets Classified As Investing Activities Payment For Short Term Financial Assets Classified As Investing Activities Payment for short term financial assets classified as investing activities. Purchase of intangible assets, classified as investing activities Purchase of property, plant and equipment, classified as investing activities Adjustments For Fair Value Adjustment On Warrant Liabilities Adjustments For Fair Value Adjustment On Warrant Liabilities Adjustments for fair value adjustment on warrant liabilities. Adjustments for finance income (cost) Adjustments For Merger And Listing Expense Adjustments for merger and listing expense. Cash flows from (used in) operating activities Income taxes paid (refund), classified as operating activities Working Capital Adjustments [Abstract] Working capital adjustments. Adjustments For Decrease Increase In Long Term Payables Adjustments for decrease increase in long term payables . Adjustments For Decrease (Increase) In Payables And Accrued Liabilities Adjustments for decrease (increase) in payables and accrued liabilities. Increase (decrease) in cash and cash equivalents after effect of exchange rate changes Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Supplemental Noncash Financing Information [Abstract] Supplemental non-cash financing information . Transaction Costs Recorded In Accrued Expenses And Other Payables Transaction costs recorded in accrued expenses and other payables . Supplemental Noncash Investing Information [Abstract] Supplemental non-cash investing information. Description Of Accounting Policy For Earnout Consideration [Text Block] Description of accounting policy for earnout consideration. Description Of Accounting Policy Of Capitalization Of Transaction Costs Explanatory [Text Block] Description of accounting policy of capitalization of transaction costs explanatory. Description Of Accounting Policy Of Cash And Cash Equivalents And Short Term Financial Assets Explanatory [Text Block] Description of accounting policy of cash and cash equivalents and short term financial assets explanatory. Description Of Accounting Policy Of Current Versus Non Current Classification Explanatory [Text Block] Description of accounting policy of current versus non current classification explanatory. Disclosure Of Income And Expenses Disclosure of income and expenses. Disclosure Of Warrant Liabilities Explanatory [Text Block] Disclosure of warrant liabilities explanatory. Other Current Assets Other Receivable And Accrued Income [Text Block] Other current assets other receivable and accrued income.