TY  - RPRT
TI  - Diverging exercises while accommodating; a simple technique using an accommodation card, a prism rack, and plus and minus spheres.
AU  - C BERENS
AU  - V BRACKETT
AU  - B E TAYLOR
PY  - 1958
UR  - https://pubmed.ncbi.nlm.nih.gov/13486989/
ID  - 13486989
ER  -