Closeups of Secretary of State Clinton taken during her Senate testimony Wednesday revealed that her head injury last month left her with lingering vision problems. As she testified about the Sept. 11 ...

A prominent New York ophthalmologist believes that a special pair of glasses worn by former former Secretary of State Hillary Clinton are the type used to treat the double vision sometimes caused by ...

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 ...

HATTERAS - A shipwreck museum indeed may be the most fitting place for the remains of the Cape Hatteras Lighthouse’s original Fresnel lens. With its former majesty picked away by vandals and salvagers ...

ST. GEORGE ISLAND - The St. George Lighthouse Association has added a life-size reproduction of the Cape St. George Light’s Fresnel lens to the collection at the Keeper’s House Museum. “We felt that ...

MANTEO - The original lens for the Cape Hatteras Lighthouse, long thought lost to war or thieves, has been found in a climate-controlled storage building on Roanoke Island. The 6,000-pound Fresnel ...

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 ...

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 ...