Dry Eye Assessment Tool – OSDI
The Ocular Surface Disease Index (OSDI) is a clinically validated, 12-item questionnaire developed by the Allergan Outcomes Research Group. It is the gold standard assessment tool used by ophthalmologists and dry eye specialists worldwide to measure the severity of dry eye symptoms, environmental triggers, and visual limitations experienced over the last week.
Eye Blink Rate Calculator
This blink rate calculator is part of a growing set of free eye tools and calculators from Pristine Eye Hospitals, designed to help you understand your eye health between clinic visits. No download, sign-up, or payment is needed — it runs directly in your browser on a laptop, tablet, or phone with a front-facing camera, and no video is ever recorded or uploaded.
Blink Break Chrome Extension
Take a 20-second blink break every 20 minutes to reduce eye strain. Powered by Pristine Eye Hospitals.
BlinkBreak helps you protect your eyes during long screen sessions by guiding you through the 20-20-20 rule, recommended by eye care professionals: