@misc{indiciae50f25f81ac8c, title = {Automated variable contrast acuity testing.}, author = {M A Mainster and G T Timberlake and C L Schepens}, year = {1981}, doi = {10.1016/s0161-6420(81)80035-8}, url = {https://pubmed.ncbi.nlm.nih.gov/7335308/}, note = {Source identifier: 7335308} }