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Handheld Risley Prism


Item #: ARPHH30

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This convenient testing tool utilizes a rotating knob to conveniently vary prism demand up to 30PD in each direction (eso/exo). A prism before each eye can increase the demand of 60PD. The prism is approximately 1" in diameter.


Disclaimer: Please note that the products offered on our website have not been evaluated or reviewed by the United States Food and Drug Administration (FDA), unless explicitly stated otherwise. The information provided on this website is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. The products offered on our website are not intended to replace or substitute any advice, diagnosis, or treatment provided by a qualified healthcare professional. It is strongly encouraged that any use of our products in an effort to improve visual skills only be done so under the guidance and supervision of a qualified healthcare professional.

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