| Cover | Feb. 14, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 14, 2022 |
| Entity File Number | 333-258528 |
| Entity Registrant Name | RETINALGENIX TECHNOLOGIES INC. |
| Entity Central Index Key | 0001836295 |
| Entity Tax Identification Number | 82-3936890 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1450 North McDowell Boulevard |
| Entity Address, Address Line Two | Suite 150 |
| Entity Address, City or Town | Petaluma |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94954 |
| City Area Code | (415) |
| Local Phone Number | 578-9583 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | true |
| Entity Information, Former Legal or Registered Name | Not Applicable |
