An Objective Assessment of the Effect of Fogging on Accommodation


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Abstract

The effect on accommodation of using plus lenses to fog an eye that is viewing a distant target has been measured with an infrared autorefractor. Sixteen subjects were used; eight hyperopes and eight myopes. There is no difference between the results for the two refractive groups. Intersubject variation did occur; some subjects remained relaxed as the amount of fog was increased, other subjects relaxed initially and then began to accommodate. The data indicate that up to 2 D of fogging can occur before accommodation begins to return to its resting state.

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