Accommodation in Untextured Stimulus Fields.
Abstract
Recent research employing the laser optometer has shown that accommodation is notably inaccurate with reduced illumination, textural cue removal, or small aperture viewing. These situational ametropias are most plausibly and parsimoniously explained as a passive return to an intermediate resting position for accommodation, operationally defined as the dark focus. Although, for any individual, large correlations exist among these ametropias, statistically reliable differences occur among them as well. A series of experiments show that a portion of the differences may be due to chromatic aberration. The dark focus is the major determinant of the accommodative response; under steady-state conditions the response is a compromise between stimulus and dark focus distances. Spatial characteristics of the stimuli also appear to be important factors in determining this compromise distance of accommodation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1979
- Accession Number
- ADA084437
Entities
People
- Denise C. R. Benel
- Russell A. Benel
Organizations
- University of Illinois Urbana–Champaign