TY  - RPRT
TI  - Visual acuity repeatability in keratoconus: impact on sample size. Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study Group.
AU  - M O Gordon
AU  - K B Schechtman
AU  - L J Davis
AU  - T T McMahon
AU  - J Schornack
AU  - K Zadnik
PY  - 1998
DO  - 10.1097/00006324-199804000-00021
UR  - https://pubmed.ncbi.nlm.nih.gov/9586749/
ID  - 9586749
ER  -