TY - RPRT TI - Automated variable contrast acuity testing. AU - M A Mainster AU - G T Timberlake AU - C L Schepens PY - 1981 DO - 10.1016/s0161-6420(81)80035-8 UR - https://pubmed.ncbi.nlm.nih.gov/7335308/ ID - 7335308 ER -