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Objective To evaluate the effect of extended depth of focus contact lenses on the accommodation of presbyopic eyes. Methods It was a double-blind randomized controlled trial. Thirty eyes of 30 emmetropic volunteers (15 males, 15 females) who were staff or family members of Hainan Eye Hospital, aged (49.6±4.5) years, were selected. Non-dominant eyes were fitted with soft contact lenses with an extended depth of field. The subjects and examiners were double-blind. Visual acuities of the subjects were examined at 5 m, 40 cm and 60 cm dist
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