TY  - RPRT
TI  - Changes in visual acuity in repeated measurement.
AU  - E P Horne
AU  - D A Hines
PY  - 1969
DO  - 10.1080/00221309.1969.9711275
UR  - https://pubmed.ncbi.nlm.nih.gov/5779627/
ID  - 5779627
ER  -