The clinical use of prisms; and the decentering of lenses (1893)
Maddox, Ernest Edmund, 1860-1933 · Bristol : J. Wright ; London : Simpkin, Marshall, Hamilton, Kent · leaf 113
ll seen in cases of periodic squint, as theyare called. On rising in the morning, there isperhaps no squint, but as the day wears on, andthe eyes get tired, the squint appears, its mani- 7 98 PRISMS. festation being partly* due to the diminishingvigour of the visual-reflex, the amplitude of… … Fig. 48.—A periodic squint in its latent phase. in the early morning. The first two grades ofconvergence, each excessive if the patient be a * I say partly, because I believe that the convergingcentre may perhaps become more excitable by the constantstimulus of accommodation in these cases. t These…
Lenses
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