. Author manuscript; available in PMC: 2013 Feb 21.

Published in final edited form as: Am J Ophthalmol. 2010 Dec;150(6):798–806. doi: 10.1016/j.ajo.2010.06.014

Table. Intraobserver and Interobserver Repeatability of Cross-Sectional Tear Meniscus and Conjunctivochalasis Area Measurements.

Variables	Intraobserver/Intraclass Correlation Coefficient (95% CI)

	Before (n = 36)	After (n = 36)
TMA (mm²)	0.998 (0.995–0.999)	0.999 (0.998–1.000)
CChA (mm²)	0.998 (0.996–0.999)	0.994 (0.988–0.997)

Variables	Interobserver/Cronbach's Alpha Coefficient (95% CI)

	Before (n = 36)	After (n = 36)

TMA (mm²)	0.993 (0.971–0.992)	0.997 (0.988–0.997)
CChA (mm²)	0.987 (0.974–0.993)	0.988 (0.977–0.994)

CChA = conjunctivochalasis cross-sectional area; CI = confidence interval; TMA = tear meniscus cross-sectional area.