Integration of a sensory component into the accommodation model reveals differences between emmetropia and late-onset myopia.

摘要: Purpose To evaluate the differences in accommodative function between subjects with emmetropia and those late-onset myopia (LOM). Methods This study suggests a modified model of static accommodation, which an sensory gain as linear operator is added to simulate part system. Results derived from show that not only affects slope response but also increases system's effective threshold (ET) blur signal. method expands utility using control accommodation behavior. Thirteen emmetropic 10 LOM participated this study. The subject's responses one-, two-, three-, four-diopter stimuli were measured by Canon R-1 optometer, dark focus, function, ET compared subjects. results although dark-focus values slopes are significantly different LOM, ETs different. Conclusions higher found among either (or error) signal degraded system, dead space internal system high, or both factors important. On basis further analysis data, we speculate was less sensitive than