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
TS 5000: 12^, 15, 20^, 25^, 30^, 35^, 40^ – with handles or without handles
NOT CE Marked for European Sales
*International Orders may be accessed Duty / Taxes at the time of delivery – these are not pre-paid
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.