Table 2.

Association of OSDI (scores subtracted from 100) with ocular surface parameters (Spearman ρ)

		Oxford score	van Bijsterveld score	Tear film breakup time	Schirmer without anesthesia score	Schirmer with anesthesia score
OSDI	Mean (sd); % floor
Symptoms	62.5 (25.7); 12%	0.02	0.16	-0.10	-0.04	0.02
Visual function	78.2 (21.4); 21%	0.15	0.17	0.22	0.12	0.05
Environmental triggers	60.2 (34.3); 24%	-0.01	0.13	-0.02	0.04	0.12
Overall	70.0 (20.2); 10%	0.07	0.19	0.06	0.04	0.08