The subjective controllability of exotropia and its effect on surgical outcomes in patients with intermittent exotropia

Table 3 Cox proportional hazard regression analysis for recurrence of exotropia in patients with controllability

N = 130	HR	95% CI	p-value
Sex	1.092	0.344–3.472	0.881
Mean onset of exotropia	0.992	0.815–1.208	0.938
Preoperative ocular exodeviation
Distant	1.083	1.018–1.151	0.012
Near	1.102	1.037–1.172	0.002
Level of control, Control score
Distant	1.037	0.599–1.797	0.897
Near	1.701	0.914–3.166	0.094
Overall	1.176	0.835–1.657	0.354
Spherical equivalent refractive errors
Right eye	1.232	0.816–1.861	0.322
Left eye	1.039	0.704–1.533	0.848
Mean age of surgery (range), yr	0.891	0.685–1.158	0.388
Immediate postoperative ocular deviation
Distant	0.985	0.784–1.239	0.898
Near	1.073	0.866–1.329	0.519

The level of control was measured using the Look And Cover, then Ten seconds of Observation Scale for Exotropia (LACTOSE) control scoring system. This control system was constructed by incorporating scales for both distance and near evaluations (5-point scales: 0–4 in each), yielding a total score ranging from 0 to 8. Higher and lower scores indicated poorer and better levels of control, respectively

ISSN: 1471-2415