TY  - RPRT
TI  - A forced-choice test improves clinical contrast sensitivity testing.
AU  - Vaegan
AU  - B L Halliday
PY  - 1982
DO  - 10.1136/bjo.66.8.477
UR  - https://pubmed.ncbi.nlm.nih.gov/7104264/
ID  - 7104264
ER  -