Horizontal prism - in far for Sheard &#x7C; Eye &#x7C; Refraction
horizontal prism - in far for sheard &#x7c; eye &#x7c; refraction
Horizontal prism - in far for Sheard &#x7C; Eye &#x7C; Refraction
horizontal prism - in far for sheard &#x7c; eye &#x7c; refraction