Table 1. Mean value of ocular surface parameters measured preoperatively, at 1 day, 1 and 2 months after cataract surgery.

Parameters	Dry eye group
	Preoperative value	1 day	1 month	2 months	Overall	Preop. Vs 1 day	Preop. vs 1 month	Preop. vs 2 months
TBUT (sec)	4.2±0.4	3.1±0.3	3.7±0.5	4.1±0.4	<0.001	<0.001	<0.001	<0.001
Schirmer test (mm)	5.1±0.5	4.3±0.5	4.5±0.8	5.2±0.6	0.894	0.816	0.924	0.557
Corneal sensitivity threshold (mm)	58.4±1.7	55.1±1.8	57.8±1.5	58.1±1.7	0.016	0.024	0.021	0.019
Corneal staining score	1.5±0.4	2.1±0.8	1.2±0.7	0.7±0.3	0.024	0.041	0.031	0.035
	No dry eye group
TBUT (sec)	13.5±2.5	11.4±2.3	13.4±2.7	14.1±3.1	<0.001	<0.001	<0.001	<0.001
Schirmer test (mm)	17.4±5.9	15.7±4.8	16.2±5.1	16.7±5.4	0.829	0.529	0.241	0.268
Corneal sensitivity threshold (mm)	55.9±1.4	51.2±0.9	54.1±1.2	56.1±1.3	0.295	0.262	0.418	0.350
Corneal staining score	0.4±0.1	0.7±0.2	0.5±0.1	0.3±0.1	0.031	0.035	0.029	0.027

TBUT = tear film break-up time

Continuous values were analyzed by linear mixed model with Bonferroni post hoc analysis.

Non-continuous values were analyzed by generalized linear mixed model analysis with Bonferroni post hoc analysis.