TY  - RPRT
TI  - A modified letter matching chart for testing young children's visual acuity.
AU  - A Hedin
AU  - K G Nyman
AU  - B Derouet
DO  - 10.3928/0191-3913-19800301-13
UR  - https://pubmed.ncbi.nlm.nih.gov/7391898/
ID  - 7391898
ER  -