Our Partners

Sierra | CRO

Our Partners

Industry Leaders

We are honored to collaborate with Ophthalmic industry thought leaders and companies across the globe. Every single one of our partners have made ongoing strategic contributions to the growth and success of Sierra and our clients.


Together, transforming vision research.

Sierra Clinical


I love working with Sierra because their people are so reliable, nice, and responsive to my team and me. In addition they are always very knowledgeable in the ophthalmology clinical trials we participate in. Vance Thompson, MD, FACS
Ophthalmologist
Vance Thompson Vision


ClinReg Consulting Services
O'Connell Regulatory Consultants
Slade & Baker Vision
Vance Thompson Vision
Dishler Laser

Sierra Clinical Services has consistently delivered for our clients, thereby establishing a proven track record in support of successful FDA premarket submissions for medical devices. Lee Kramm, M.D., M.S.E.
President/Board-Certified Ophthalmologist
ClinReg Consulting Services, Inc.



Our Clients

Sierra Clinical

Carl Zeiss LensGen Sight Sciences RxSight
EyeGate Glaukos Allotex iStar
ZPlus Lumenis Alcon Keramed

I have worked for years, over many successful FDA studies, with Aaron and his group. They are a unique combination of clinical excellence, integrity and just simply being fun to work with. Highest recommendation. Stephen Slade, M.D.
Slade & Baker Vision