Abstract
Purpose :
To evaluate the clinical characteristics and surgical outcomes of patients with congenital superior oblique palsy (SOP) showing large horizontal misalignment.
Methods :
Patients with congenital SOP were allocated into one of two groups. Those with horizontal deviations ≥15 prism diopters（PD）who underwent both horizontal and vertical strabismus surgery (H+V group) versus those with horizontal deviations <15 PD who underwent vertical strabismus surgery only (V group). Clinical characteristics and surgical outcomes between the two groups were analyzed.
Results :
Of 214 patients, 46 met the criteria for the H+V group and 44 were randomly selected for inclusion in the V group. Clinical findings between the H+V group and V group including ages (15.74±9.37 vs. 7.27±8.67 years), bilateral SOPs (30.43% vs. 6.82%), abnormal head position (39.13% vs. 90.91%) and exotropia (95.65% vs. 47.73%) had statistically significant differences (P<0.05). While postoperative horizontal reductions in the H+V group (28.67±14.61 PD) were significantly greater than that of the V group (2.32±4.14 PD) (P=0.000), no statistically differences for postoperative reductions in vertical deviation were obtained (P=0.077). As based on final postoperative evaluations, patients in the H+V group showed a slightly higher surgical successful rate than that of the V group (50% vs. 45.5%), although these differences failed to achieve statistical significance (P=0.67).
Conclusions :
Patients with congenital SOP who demonstrate large horizontal strabismus are often older, present with greater numbers of bilateral cases, fewer numbers of abnormal head position and tend to experience better surgical outcomes than those showing little or no horizontal strabismus.
This is a 2020 ARVO Annual Meeting abstract.