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New high-index visolett magnifier
1Saint Barnabas Low Vision Center, West Orange, New Jersey 07052.
Annals of Ophthalmology
|August 1, 1992
Abstract:
The high-index Visolett magnifier (index, 1.806) is an optically designed glass paperweight magnifier. It magnifies 2.49x, is 32mm in diameter, nonfocusable, and rests on paper. All Visoletts commercially available are made of crown glass (index, 1.523). The 32mm high-index Visolett has become commercially available recently. The use of high-index material increases the image size by 39%.