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Introducing Stella.

An Innovation in EVO Ordering

Built for the future, to enable practice capacity & growth

Get Certified

Frequently Asked Questions

Stella replaces the Online Calculation and Ordering System (OCOS) for ordering EVO ICL lenses. Stella is STAAR Surgical’s latest innovation in EVO lens ordering. Benefits of Stella include a streamlined and more efficient workflow, easy ordering, and integrated planning.

No. Although the calculator was improved to enhance user experience, the calculator algorithm remains the same and will return the same calculation results as OCOS.

Training should take approximately 30 minutes. There are 4 training modules that include instruction on how to: navigate Stella; perform lens calculations for EVO ICL; order EVO ICL; and generate an implantation orientation diagram. A short quiz follows the training videos at the completion of the course. A passing score completes each user’s certification.

In order to move to the new Stella system from OCOS, all users will need to be trained and certified. Stella training is available online on STAAR Surgical’s Education Portal ( If you are a current OCOS user, you will receive an invitation automatically once Stella training is available to you. If you are not an OCOS user, please request access to the training via your sales representative, clinical application specialist, or customer service.

No. OCOS accounts, with all calculations, carry over and will be visible in Stella.

Yes, your account information is transferred from OCOS to Stella. However, you will need to reset your password prior to your first time accessing Stella.


Ready to take the next step?

Visit our online portal to setup your account and begin training today, or contact us for more information!