Table 2. The pre- and postoperative data of patients who underwent only vertical rectus transposition surgery augmented with Foster suture for Duane syndrome or sixth nerve palsy, with their distribution according to the time of the postoperative data collection.

	Duane syndrome			Sixth nerve palsy
	No. of patients (n)	Mean esotropia (pd)	Mean abduction	No. of patients (n)	Mean esotropia (pd)	Mean abduction
Pre-op	34	29.8±8.3	−3.8±0.4	37	42.05±7.4	−3.9±0.4
Post-op
1 month	34	0.74±0.1	−2.2±0.1	37	0.95±0.07	−1.8±0.7
6 months	34	1.47±0.4	−2.2±0.06	37	0.10±0.03	−1.8±0.1
1 year	34	1.31±0.3	−2.2±0.3	37	0.57±0.01	−1.6±0.9
2 years	27	0.40±0.03	−2.1±0.8	32	0.60±0.02	−1.7±0.3
3 years	21	1.62±0.08	−2.3±0.4	26	0.65±0.04	−1.8±0.4
4 years	16	1.01±0.2	−2.5±0.5	22	0.71±0.08	−1.7±0.6

Abbreviations: No., number; pd, prism diopter; post-op, postoperative; pre-op, preoperative.