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  •  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
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Page 1:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 2:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 3:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 4:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 5:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 6:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 7:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 8:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 9:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 10:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 11:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 12:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 13:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 14:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 15:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 16:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 17:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 18:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 19:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 20:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 21:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 22:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 23:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 24:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-
Page 25:  · These lenses have been used to correct astigmatism. In the early 1930's they were replaced by lenses of toric design. Being flat, sph/cyl and plano/cyl lenses generally g.ve poorer-

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