Gradal RDIn the 1994 Carl Zeiss introduced the first progressive lens specially developed for the requirements of indoor vision. Gradal RD lenses provide presbyopic patients with an ideal complement to standard progressives and reading lenses.
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Gradal RDIn the 1994 Carl Zeiss introduced the first progressive lens specially developed for the requirements of indoor vision. Gradal RD lenses provide presbyopic patients with an ideal complement to standard progressives and reading lenses.
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