Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study: Methods and findings to date

New Visual Acuity Charts for Clinical Research

Frederick L. Ferris, Aaron Kassoff, George H. Bresnick et al. · American Journal of Ophthalmology · 1982 · 2.2K citations

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A 48-Year Clinical and Epidemiologic Study of Keratoconus

Robert H. Kennedy, William M. Bourne, John A. Dyer · American Journal of Ophthalmology · 1986 · 964 citations

Medicine, Dermatology, Ophthalmology +10

Baseline findings in the Collaborative Longitudinal Evaluation of Keratoconus (CLEK) Study.

Karla Zadnik, Joseph T. Barr, Timothy B. Edrington et al. · PubMed · 1998 · 545 citations

Medicine, Dermatology, Ophthalmology +13

Quality of life in keratoconus

Steven Kymes, Jeffrey J. Walline, Karla Zadnik et al. · American Journal of Ophthalmology · 2004 · 253 citations

Medicine, Dermatology, Ophthalmology +7

Between-Eye Asymmetry in Keratoconus

Karla Zadnik, Karen Steger-May, Barbara A. Fink et al. · Cornea · 2002 · 193 citations

Medicine, Ophthalmology, Surgery +17