Randot Book for Stereo Acuity Test and Stereosis Test

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• Professional Medical Supplies
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• Innovative Stereo Eye Test Design: Features simple geometric forms and the familiar "E" letter at 500 and 250 seconds of arc. The front page can be used as a handy matching guide, making it easier to administer to non-verbal subjects who can simply point to the shape they perceive.
• Advanced Stereo Optical Test Features: Includes a specialized suppression check utilizing "L" and "R" targets with vertical and horizontal lines. This unique function allows professionals to efficiently analyze visual balance and detect eye dominance under binocular conditions.
• Precision Depth Perception Training Tools: The multiple-choice circles series provides a finely graded sequence across ten levels of disparity. It reliably evaluates fine depth discrimination from 400 down to a highly sensitive 20 seconds of arc at the standard 16-inch testing distance.
• Reliable Stereo Acuity Test: By utilizing binocularly devised random dot patterns, this manual forces subjects to extract figures from the background, effectively eliminating invalidating monocular clues such as motion parallax, overlap size, perspective, and shading.
• Standardized Depth Perception Test Administration: For optimal screening, hold the book upright to maintain the proper axis of polarization and ensure adequate lighting without surface reflections. Bifocal wearers should position the book properly for near-point viewing while wearing the included viewers.