| Cover | Apr. 28, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 28, 2023 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-36080 |
| Entity Registrant Name | IVERIC bio, Inc. |
| Entity Central Index Key | 0001410939 |
| Entity Tax Identification Number | 20-8185347 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 8 Sylvan Way |
| Entity Address, City or Town | Parsippany |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07054 |
| City Area Code | 609 |
| Local Phone Number | 474-6755 |
| Written Communications | false |
| Soliciting Material | true |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | ISEE |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
