Fresnel Prism Lens & Trial Lens Set
Fresnel 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.
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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 oculormotor imbalances in the trial frame.
* Fits all standard trial frames, 38 mm lens.
* Offers excellent optical qualities.
* Made of thin optical quality acrylic and are lightweight.
* Each set includes a display box.
* Available as two separate sets providing a full range of prisms.
TS 4000: 2^, 3^, 4^, 5^, 6^, 8^, 10^ – with handles or without handles
OR
TS 5000: 12^, 15, 20^, 25^, 30^, 35^, 40^ – with handles or without handles
