THE NEL SIZE-CONTRAST TEST FOR MEASURING VISUAL PERFORMANCE
Abstract
Research concerns the development of a simple, portable field test and procedure for the evaluation of visual capabilities, using various optical and electronic transmission devices, under various atmospheric conditions. =est results indicated the following: (1) a portable, easily administered test was developed which can be used to derive standard visual threshold curves as a function of size and contrast; (2) est scores obtained were predictable by standard visibility calculation procedures; (3) test scores varied as a function of observation range and optical magnifications; and (4) using the test's scores for the unaided eye as a basic reference, a visual efficiency index could be established for various optical and electronic image transmission devices. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1961
- Accession Number
- AD0260291
Entities
People
- Ailene Morris
Organizations
- Navy Electronics Laboratory