L Rothkoff¹, M Popper¹, A Kremer², N Feit¹
¹Tel Aviv Medical Center, Jewish Braille Institute Low Vision Clinic, Tel Aviv, Israel; ²Optica Gaash, TSR, Kibbutz Gaash, Israel
We have simplified the fitting of telescopes in an elderly sedentary population by testing at a distance of only two meters, thereby allowing the use of lower power wider field telescopes. But the addition of reading caps has had limited success because of the poor optics, aberrations, and limited field attained with the present caps. As vision worsens, it becomes necessary to use stronger telescopes to retain reading ability, with all the inherent problems involved, such as additional expense, and small width and depth of field. Therefore, we have begun using doublet microscope lenses (Clear Image, Designs for Vision) to cap the telescope for reading. This lens has a large field of view of 40 mm, with excellent optics. By adding a 3x microscope on to a 2.2x telescope for distance, we attain a 6.6x reading power (+26 equivalent power), at a reasonable reading distance, with minimal additional expense to the patient. We have been very successful in fitting these patients with this combination which allows adequate magnification for watching television, and easy adaptation for near reading.
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