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 ...

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 ...

Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface, much ...