Haag-Streit Stimuli Refraction Device

Brand: Haag-Streit


The Haag-Streit Stimuli Refraction Device brings unlimited charts to the patient.

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The Stimuli™ is a refraction device that replaces the old technology, the automated projector.

Stimuli™ eliminates the “memory effect” by bringing virtually unlimited charts to the patient in a random manner. All functions are at the practitioners’ fingertips.

Since its introduction in 2000, the Stimuli™ Visual Acuity System has been a very reliable tool in the hands of physicians at clinics as well as private practice. The new 21.5″ iMac slim line makes Stimuli™ Advanced an even more desirable and versatile diagnostic tool.


  • Randomizes optotypes and eliminates patient memory effect
  • Calibrates for long, short, or folded exam rooms
  • Wide Dynamic Range, High Sensitivity
  • Resolves to sub-pixel accuracy
  • A pediatric version is available with a suite of appealing optotypes-tumbling E’s and C’s, cartoons and tests

The Stimuli™ Advanced Version 4.1 Includes:

  • 21.5″ Apple iMac Computer Monitor
  • Stimuli Software Package
  • New RF Wireless Remote
  • Pediatric Suite of Octotypes – Tumbling E’s and Tumbling C’s
  • Cartoons Feature Package
  • Contrast Sensitivity Test
  • Direct access to all tests
  • Optotypes, features via RF wireless keyboard