What question did this study set out to answer?

The research aims to evaluate how plus lenses used for fogging affect the accommodation response in different refractive groups.

March 21, 2026

An Objective Assessment of the Effect of Fogging on Accommodation

Key Points

The research aims to evaluate how plus lenses used for fogging affect the accommodation response in different refractive groups.
Measured accommodation using an infrared autorefractor
Involved sixteen subjects: eight hyperopes and eight myopes
Analyzed intersubject variation in accommodation to fogging
No significant difference in accommodation between hyperopes and myopes
Intersubject variation was observed, with different responses to increased fogging
Up to 2 D of fogging was noted before accommodation began to revert to the resting state

Abstract

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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