The app is intended for Professional Ophthalmology or Optometry eye specialists to perform eye measure exams like pd measurementand many more.This app is also intended for everyone who want to perform various of eye measure exams like:* Pupil distance (Pupillary Distance) eye exam* Bridge width eye exam* Eye size exam* Minimum Left and Right Blank Size eye measure* Lens height eye measure* Left pupil to bottom of lens eye exam* Right pupil to bottom of lens eye exam* Left pupil to center of the bridge eye distance* Right pupil to center of the bridge eye distanceOn the latest version we also have Progressive measurements eye-exam. This is the only eyemeasure app that has progressive distance measurement:* Vertex distance* Pantoscopic tilt* Inclination AngleWe also have a standard Visual Acuity eye-exam testAlso these makes the app perfect for any Ophthalmology & Optometry specialist or student.You can easily measure your pupil distance(pupillary distance) or any Progressive measurement and many more!Save you exams for later usage.Our solution is SIMPLE to use!Results provided are PRECISE and reliable!