JOINT FILING AGREEMENT

Exhibit 99.1

CUSIP NO. 000000000

JOINT FILING AGREEMENT

In accordance with Rule 16a-3(j) and Rule 13d-1(k)(1) and under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of Forms 3, 4, 5 and Schedules 13D and 13G (including any and all amendments thereto) with respect to the Common Stock, par value $0.001 per share, of Ophthotech Corporation and further agree that this Joint Filing Agreement shall be included as an exhibit to such joint filings.

The undersigned further agree that each party hereto is responsible for the timely filing of such Forms 3, 4, 5 and Schedules 13D and l3G and any amendments thereto, and for the completeness and accuracy of the information concerning such party contained therein; provided that no party is responsible for the completeness or accuracy of the information concerning any other filing party, unless such party knows or has reason to believe that such information is inaccurate.

This Joint Filing Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original instrument, but all of such counterparts together shall constitute one agreement.

In evidence thereof, the undersigned, being duly authorized, hereby execute this Joint Filing Agreement as of March 2, 2017.

SVLSF IV, LLC
By:		/s/ Xxxxxx Xxxxx
Name:		Xxxxxx Xxxxx
Title:		Member
SV LIFE SCIENCES FUND IV (GP), L.P.
By: SVLSF IV LLC, its General Partner
By:		/s/ Xxxxxx Xxxxx
Name:		Xxxxxx Xxxxx
Title:		Member
SV LIFE SCIENCES FUND IV, L.P.
By: SV Life Sciences Fund IV (GP), L.P., its General Partner
By: SVLSF IV, LLC, its General Partner
By:		/s/ Xxxxxx Xxxxx
Name:		Xxxxxx Xxxxx
Title:		Member
SV LIFE SCIENCES FUND IV STRATEGIC PARTNERS, L.P.
By: SV Life Sciences Fund IV (GP), L.P., its General Partner
By: SVLSF IV, LLC, its General Partner
By:		/s/ Xxxxxx Xxxxx
Name:		Xxxxxx Xxxxx
Title:		Member