TY  - RPRT
TI  - Clinical notes; a simplified astigmometer.
AU  - J E LEBENSOHN
PY  - 1950
DO  - 10.1001/archopht.1950.00910010920015
UR  - https://pubmed.ncbi.nlm.nih.gov/15414090/
ID  - 15414090
ER  -