TABLE 1.

Changes in study measures over 10 years

Distance findings	BO break	BO recovery	BI break	BI recovery	Phoria	IPD
Mean ± SD at year 1	20 ± 9 pd	15 ± 6 pd	7 ± 2 pd	5 ± 2 pd	0.1 ± 2.2 pd exo	59 ± 3 mm
Change over 10 yrs	↓ 5.6 pd	↓ 4.6 pd	↑ 0.5 pd	↓ 0.4 pd	0.01 pd more exo	↑ 3 mm
p	<0.0001	<0.0001	0.0413	0.1382	0.6117	<0.0001
Near findings	BO break	BO recovery	BI break	BI recovery	Phoria	NPC
Mean ± SD at year 1	30 ± 9 pd	24 ± 7 pd	13 ± 5 pd	10 ± 4 pd	2.4 ± 5.1 pd eso	1 ± 2 cm
Change over 10 yrs	↓ 9.4 pd	↓ 8.3 pd	↑ 0.04 pd	↓ 0.09 pd	4.1 pd more exo	↑ 0.3 cm
p	<0.0001	<0.0001	0.92	0.8027	<0.0001	0.3147

BO, base-out; BI, base-in; pd, prism diopters; IPD, interpupillary distance; NPC, nearpoint of convergence.