Researchers from the Schepens Eye Research Institute of Massachusetts Eye and Ear and Harvard Medical School have designed three new eyeglasses using high-power prisms to optimally expand the visual ...

To increase the power of the peripheral prism, the bi-part double Fresnel prism combines two prism segments angled to each other. This design allows for up to 43 degrees of expansion to the visual ...

I read with interest the article by D W Kim et al 1 on conservative management for consecutive esotropia (ET) after intermittent exotropia (IXT) surgery. The authors managed patients with full-time ...

Boston, Mass. -- Researchers from the Schepens Eye Research Institute of Massachusetts Eye and Ear and Harvard Medical School have designed three new eyeglasses using high-power prisms to optimally ...

Prism Projection, Inc. will be offering attendees at LDI 2011 the opportunity to see the next generation of lighting technology with not only a product launch but also a head to head comparison of ...

The important thing is they didn't drop it. A team of experts on Thursday removed the Fresnel lens from the St. Marks Lighthouse. The lens was installed in 1867. It consists of dozens of glass prisms ...