Table 4.

The mean difference of pre- and postoperative far and near deviations in both convergence insufficiency and divergence excess exotropic cases and their controls

Factors	Total			XT' $>$ XT $\ge$ 10pd (CI)			XT $>$ XT' $\ge$ 10pd (DE)
	Slanted	Augmented	P $‡$	Slanted	Augmented	P $‡$	Slanted	Augmented	P $‡$
N	24	25	19	10	5	15
Preop. difference	Mean $\pm$ SD	11.75 $\pm$ 3.29	11 $\pm$ 2.5	0.441	11.37 $\pm$ 2.79	11 $\pm$ 2.11	0.713	13.2 $\pm$ 4.87	11 $\pm$ 2.8	0.688
	Median (range)	10 (9 to 20)	10 (10 to 20)	10 (10 to 20)	10 (10 to 15)	10 (9 to 19)	10 (10 to 20)
Post-op. difference	Mean $\pm$ SD	3.29 $\pm$ 2.65	2.4 $\pm$ 2.94	0.163	3.42 $\pm$ 2.69	1.2 $\pm$ 1.69	0.026	2.8 $\pm$ 2.68	3.2 $\pm$ 3.36	0.928
	Median (range)	3 (0 to 8)	2 (0 to 10)	2 (0 to 8)	0 (0 to 4)	4 (0 to 6)	2 (0 to 10)
Reduction	Mean $\pm$ SD	–8.46 $\pm$ 3.65	–8.6 $\pm$ 3.86	0.753	–7.95 $\pm$ 2.63	–9.8 $\pm$ 3.16	0.207	–10.4 $\pm$ 6.27	–7.8 $\pm$ 4.18	0.479
	Median (range)	–8.5 (–19 to –2)	–8 (–15 to 0)	–8 (–12 to –2)	–10 (–15 to –6)	–10 (–19 to –4)	–8 (–15 to 0)
Dose response	Mean $\pm$ SD	–7.83 $\pm$ 5.54	–7.72 $\pm$ 2.85	–7.55 $\pm$ 5.18	–8.8 $\pm$ 1.69	–8.87 $\pm$ 7.34	–7 $\pm$ 3.27
	Median (range)	–5.75 (–20 to –1)	–8 (–10 to 0)	–6 (–20 to –1)	–10 (–10 to –6)	–5 (–19 to –1.33)	–8 (–10 to 0)
Success rate (%)		92%	92%	89%	100%	100%	87%
XT, exotropia; CI, convergence insufficiency; DE, divergence excess; pd, prism diopter; N, number; Op., operation; SD, standard deviation; P, probability $‡$Based on Mann–Whitney test