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Available with or without handle to allow for unobstructed, 360 degree rotation.
Raised ridge prevents prism edges from touching table.
* Allow accurate testing of large oculomotor imbalances in the trial frame. * Fits all standard trial frames, 38mm lens. * Offers excellent optical qualities. * Made of thin optical quality acrylic and are lightweight. * Each set includes a display box. * Available as two sets providing a full range of prisms. TS 4000:  2^, 3^, 4^, 5^, 6^, 8^, 10^    TS 4000 NH - No Handles TS 5000:  12^, 15, 20^, 25^, 30^, 35^, 40^    TS 5000 NH - No HandlesFresnel trial sets are indispensable as a tool for the proper evaluation of ocular motility disturbances.
These acrylic prisms allow for a more accurate  evaluation of large-angle deviations.
Because a rigid Fresnel prism reduces vision less and  creates less distortion and aberration than the press-on  prism of a corresponding power, the practitioner can  more accurately determine the tolerance to a given  press-on.
The patient who is not able to tolerate a prism from the trial set due to its side effects would not be a good  candidate for a Fresnel press-on prism
Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
US$40
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