Fresnell press-on lens used to treat several ocular mobility disorders, including squint - lens are sold individually - click on the photo for other details - made of polyvinyl chloride, 1mm thick - 63.5 mm diameter [Read more...]
40D sold in sets of two - these prisms, placed properly, expand the visual field 20º - please visit www.hemianopia.org - fitting template enclosed [Read more...]
for all standard trial frames made of thin acrylic - a rigid Fresnel prism creates less distortion and aberration than the press-on prism of a corresponding power the practitioner can more accurately determine the tolerance of the patient to a given... [Read more...]
1 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
2 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
3 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
4 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
5 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
6 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]
7 dptp - flat plastic lens can be rotated to any position with finger screws - power and base are marked on prism - adult model comes with a thicker elastic band that has Velcro attachment for easy on/off [Read more...]