Nature of Business	3 Months Ended
Nature of Business	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Ocugen, Inc., together with its wholly owned subsidiaries ("Ocugen" or the "Company"), is a biotechnology company focused on discovering, developing, and commercializing novel gene and cell therapies and vaccines that improve health and offer hope for patients across the globe. The Company is headquartered in Malvern, Pennsylvania, and manages its business as one operating segment. Our technology pipeline includes: •Modifier Gene Therapy Platform — Based on the use of nuclear hormone receptors ("NHRs"), the Company believes its modifier gene therapy platform has the potential to address many retinal diseases, including rare genetic diseases such as retinitis pigmentosa ("RP") (OCU400) and Leber congenital amaurosis ("LCA") (OCU400), with a gene-agnostic approach. The Company also believes its modifier gene therapy platform has the potential to address multifactorial retinal diseases including dry age-related macular degeneration ("dAMD") using OCU410, which affects millions of patients in the United States alone, and Stargardt disease (OCU410ST), which is also a rare genetic disease. The Company received clearance from FDA to initiate a Phase 3 trial for OCU400 for the treatment of RP and intends to begin dosing patients in 2Q 2024. The Company further expects to expand OCU400 Phase 3 development in LCA patients in the second half of 2024 based on Phase 1/2 study results in LCA patients and subject to alignment with the FDA. Currently both OCU410, for the treatment of geographic atrophy ("GA"), an advanced form of dAMD, and OCU410ST, for the treatment of Stargardt disease, are in Phase 1/2 clinical development. In OCU410 GA study, low and medium dose cohorts were completed to date. In OCU410ST Stargardt study, low dose cohort was completed to date. •Novel Biologic Therapy for Retinal Diseases — OCU200 is a novel fusion protein consisting of two human proteins, tumstatin and transferrin. OCU200 possesses unique features which potentially enable it to treat vascular complications of diabetic macular edema ("DME"), diabetic retinopathy ("DR"), and wet AMD. Tumstatin is the active component of OCU200 and binds to integrin receptors, which play a crucial role in disease pathogenesis. Transferrin is expected to facilitate the targeted delivery of tumstatin into the retina and choroid and potentially help increase the interaction between tumstatin and integrin receptors. The Company continues to work with the FDA to address comments to lift the clinical hold. •Regenerative Medicine Cell Therapy Platform — Our Phase 3-ready regenerative medicine cell therapy platform technology, which includes NeoCart (autologous chondrocyte-derived neocartilage), is being developed for the repair of knee cartilage injuries in adults. The Company received concurrence from the FDA on the confirmatory Phase 3 trial design and has completed renovating an existing facility into a current Good Manufacturing Practice ("GMP") facility to support clinical study and initial commercial launch. This facility is needed to generate patient-specific NeoCart implant from chondrocytes derived from knee biopsy. •Inhaled Mucosal Vaccine Platform — The Company's next-generation, inhaled mucosal vaccine platform includes OCU500, a COVID-19 vaccine; OCU510, a seasonal quadrivalent flu vaccine; and OCU520, a combination quadrivalent seasonal flu and COVID-19 vaccine. The Company is conducting IND-enabling and product development activities for OCU500. The Company is currently collaborating with the National Institute of Allergy and Infectious Diseases ("NIAID") for early clinical studies for OCU500. NIAID plans to submit an IND to initiate a Phase 1 clinical trial in mid-2024. The Company is continuing discussions with relevant government agencies as well as strategic partners regarding developmental funding for its OCU510 and OCU520 platforms. Going Concern The Company has incurred recurring net losses since inception and has funded its operations to date through the sale of common stock, warrants to purchase common stock, the issuance of convertible notes and debt, and grant proceeds. The Company incurred net losses of approximately $11.9 and $17.3 for the three months ended March 31, 2024 and 2023, respectively. As of March 31, 2024, the Company had an accumulated deficit of $298.1 million and cash and cash equivalents totaling $26.4 million. This amount will not meet the Company's capital requirements over the next 12 months after the date that the condensed consolidated financial statements are issued. The Company believes that its cash and cash equivalents will enable it to fund its operations into the fourth quarter of 2024. Due to the inherent uncertainty involved in making estimates and the risks associated with the research, development, and commercialization of biotechnology products, the Company may have based this estimate on assumptions that may prove to be wrong, and the Company's operating plan may change as a result of many factors currently unknown to the Company. The Company is subject to risks, expenses, and uncertainties frequently encountered by companies in its industry. The Company intends to continue its research, development, and commercialization efforts for its product candidates, which will require significant additional funding. If the Company is unable to obtain additional funding in the future and/or its research, development, and commercialization efforts require higher than anticipated capital, there may be a negative impact on the financial viability of the Company. The Company is currently exploring options to fund its operations through public and private placements of equity and/or debt, payments from potential strategic research and development arrangements, sales of assets, licensing and/or collaboration arrangements with pharmaceutical companies or other institutions, funding from the government, particularly for the development of the Company's novel inhaled mucosal vaccine platform, or funding from other third parties. Such financing and funding may not be available at all, or on terms that are favorable to the Company. While Company management believes that it has a plan to fund operations, its plan may not be successfully implemented. Failure to generate sufficient cash flows from operations, raise additional capital, or appropriately manage certain discretionary spending, could have a material adverse effect on the Company's ability to achieve its intended business objectives. As a result of these factors, together with the anticipated continued spending that will be necessary to continue to research, develop, and commercialize the Company's product candidates, there is substantial doubt about the Company's ability to continue as a going concern within one year after the date that these condensed consolidated financial statements are issued. The condensed consolidated financial statements do not contain any adjustments that might result from the resolution of any of the above uncertainties.