Table 4. Changes of binocular vergence and horizontal phoria at distance after vision therapy for children having symptomatic ADHD and CI.

Parameters	Control group (8)		VT group (8)
	Before VT	After VT	Before VT	After VT
PFV break point (Δ)	11.25±1.06	10.13±1.57	15.50±3.40	27.25±1.94**
PFV recovery point (Δ)	2.38±1.87	2.63±1.66	3.38±0.65	15.00±2.65**
NFV break point (Δ)	7.38±1.07	8.00±0.98	10.88±2.86	12.38±2.54
NFV recovery point (Δ)	3.25±0.37	3.13±0.35	6.25±2.55	7.63±2.34
Horizontal phoria (Δ)	−1.31±0.63	−1.13±0.58	−2.38±0.74	−2.75±0.89

Data are expressed as mean±SD. **p<0.01: significantly different in the same group according to the Mann-Whitney U test. The number of subjects is in parentheses. Minus sign denotes exophoria in phoria measurement. VT, vision therapy; PFV, positive fusional vergence; NFV, negative fusional vergence