Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2014	Feb. 23, 2015	Jun. 30, 2014
Document and Entity Information
Entity Registrant Name	Ophthotech Corp.
Entity Central Index Key	0001410939
Document Type	10-K/A
Document Period End Date	Dec. 31, 2014
Amendment Flag	true
Amendment Description	We are filing this Amendment to our Annual Report on Form 10-K/A (the "Amended Report"), which was originally filed with the Securities and Exchange Commission on Form 10-K on March 2, 2015 (the "Original Report" or "Annual Report on Form 10-K"), to reflect a restatement of our financial statements. As discussed in Note 18 to our financial statements, subsequent to the issuance of the Original Report, we and the Audit Committee of our Board of Directors concluded that we should restate our balance sheets as of June 30, 2014, September 30, 2014 and December 31, 2014, and our statements of operations, comprehensive loss, cash flows and changes in stockholder's equity (deficit) for the periods ended June 30, 2014, September 30, 2014 and December 31, 2014 to correct the following errors: • In the second quarter of 2014, we recorded an income tax benefit by reducing a portion of our valuation allowance against our gross deferred tax assets. In determining the amount of the valuation allowance release, we considered anticipated 2015 tax losses which would generate a refund of a portion of federal income taxes paid in 2014. We have now determined that, as a matter of accounting principle, the net deferred tax asset recorded on our balance sheets was overstated and the income tax provision on our statements of operations was understated as of and for the periods ended June 30, 2014, September 30, 2014 and December 31, 2014. Our cash position and operating expenses were not affected. For the reasons discussed above, we are filing this Amended Report in order to amend our financial statements and the following items in Part II of the Original Report to the extent necessary to correct the errors discussed above and make corresponding revisions to our financial information cited elsewhere in this Amended Report: • Item 6. Selected Financial Data • Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations • Item 8. Financial Statements and Supplementary Data • Item 9A. Controls and Procedures In addition, in accordance with applicable Securities and Exchange Commission rules, this Amended Report includes updated certifications from our chief executive officer and chief financial officer as Exhibits 31.3, 31.4, 32.3 and 32.4, as well as an updated consent from our independent registered public accounting firm, Ernst & Young LLP. Other than minor conforming revisions made to the financial information contained in Part I,1A. Risk Factors, none of the remaining Items of our Original Report are amended hereby. Items that have not been amended have been omitted herefrom. In order to preserve the nature and character of the disclosures set forth in the Original Report, except as expressly noted above, this Amended Report speaks as of the date of the filing of the Original Report, March 2, 2015, and we have not updated the disclosures in the Amended Report to speak as of a later date. All information contained in this Amended Report is subject to updating and supplementing as provided in our reports filed with the Securities and Exchange Commission subsequent to the date of the Original Report.
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 942.5
Entity Common Stock, Shares Outstanding		34,174,090
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY