A verified path with explicit limits
Questionnaire availability depends on the app version. In the safety update, the OSDI path remains verified and new PHQ-9 collection is disabled by default.
Ocular Surface Disease Index
The safety update's verified questionnaire path for structured screening of dry eye-related symptom burden and daily-activity impact.
Older app versions may differ. Historical records labelled PHQ-9, DEQS, or CVS-Q remain readable; the safety update does not delete them.
DEQS- and CVS-Q-labelled paths remain open in the safety update as legacy/custom symptom check-ins; they have not been verified as equivalents of the published instruments or as licensed ePRO implementations.
Verified describes the app's implementation path; it does not claim independent clinical validation, regulatory clearance, or equivalence to a separately licensed ePRO deployment.
Why OSDI?
OSDI provides a structured symptom record. Even when collected correctly, it supports screening and self-tracking rather than diagnosis, and an eye care professional should interpret persistent or concerning symptoms.