The Eye Scan App (TESA)

​​Measures refractive error—like an autorefractor. Measure eye alignment—like a digital cover test.

  • Zero up-front costs:Download the app for free.
  • One month free unlimited use: No credit card required
  • No contract: Cancel at anytime.

Restricted Access

Optometrists and ophthalmologists with current state licenses will be provided with access to download TESA.

Consumers will NOT be given access to TESA.

TESA will not be accessible through “kiosks.”

Accuracy Matters

​Autorefractor- Our accuracy goal is to match “gold standard” tabletop autorefractors.

Digital Cover Test- Our accuracy goal is: plus/minus 2.5 prism diopters compared to cover test results taken by pre-qualified optometrists.

Break-through advantages of TESA mobile diagnostics:

Digital Eye Alignment Testing

Very few conventional autorefractors include measurements of eye alignment, both tropia and phoria. With TESA, these measurements are digitized.

Cost Advantages

Conventional autorefractors are expensive. Connecting to the TESA app is free, and its low per month pricing makes it the most affordable alternative in the marketplace.

Objective Test

TESA provides objective feedback to the care provider. When combined with subjective tests, it can provide a significant component of the prescriptive examination.

Footprint and Portability Advantages

Conventional autorefractors are table-mounted, take up 4-6 sq feet, are fragile and cannot be easily moved. TESA is available to anyone with an iPhone 7+ and can be easily placed in the pocket of a lab coat.

Workflow Advantages

TESA is elegantly simple to operate, and performs its measurements in a fraction of the time of table-mounted autorefractors and handheld prism cover tests.

Special Needs Advantages

TESA’s diagnostic vision tests can be performed on infants and special needs patients who are difficult to evaluate conventionally.

Advantages of TESA over other app-based technologies:

Favorable Pricing

There is a very good reason TESA is the most affordable app-based autorefractor: there is no additional hardware to purchase and maintain.

The Only “Pure App” Autorefractor

Other app-based devices require add-on hardware which requires manufacturing, shipping, and maintenance. With TESA you simply download it from the App Store.

The Only One with a Digital Cover Test

Other app-based devices measure autorefraction only. TESA does that, too, and also provides important, relevant data on eye alignment, both tropia and phoria.