Table of Contents - WOC 2012

WOC2012 Abstract Book
FP-STR-FR 121 (5)
A Randomized Clinical Trial Comparing Myectomy and Recession in
The Management of Inferior Oblique Muscle Overaction
Rajavi Zhale (1) , Molazadeh Arman (2) , Ramezani MD Alireza (3)
1. Ophthalmic Research Center, Imam Hossein Medical Center, Shahid Beheshti
University
2. Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences
3. School of Public Health and Institute of Public Health Research, Tehran University
Purpose: To determine the effect of surgical myectomy and recession on
inferior oblique over action (IOOA).
Methods: Patients were randomly assigned to either IO myectomy or recession
group. In myectomy group, 5 mm was excised from the inferior temporal
region of IO muscle(s). In recession group, IO muscle(s) was disinserted
and subsequently sutured to a point 2 mm lateral and 4 mm posterior to the
insertion of the inferior rectus on the temporal side. Satisfactory result was
defined as an IO function to be grade 0 or 1+ at 3 months postoperatively.
Results: The study included 50 patients (82 eyes) with a mean age of 12.3 ±
5.9 years. Both methods were effective on weakening of IOOA (P < 0.001).
The rate of satisfactory results was similar in both groups (P=0.686); 61.9%
and 67.5% in the myectomy and recession groups, respectively. The rate
of residual IOOA and IO underaction did not differ between the two groups;
being 16.7% and 21.4% in the myectomy and 17.5% and 15% in the recession
groups, respectively.
Conclusions: For treatment of IOOA, both IO myectomy and recession can be
used with similar success rate.
Keywords: Myectomy, Recession, Inferior Oblique Muscle Overaction.
FP-STR-FR 121 (6)
Exotropic Drift and Long-Term Ocular Alignment After Surgical
Correction for Infantile Exotropia: Comparison with Intermittent
Exotropia
Yam Cheuk Sing Jason (1) , Ko Tak Chuen Simon (1) , Wu Kai Wah Patrick (1) ,
Wong Suk Fong Ursula (1) , Chan Wai Nang Clement (1)
1. Department of Ophthalmology, Tung Wah Eastern Hospital
Purpose: to evaluate the amount of postoperative drift of infantile exotropia,
with comparison with those of intermittent exotropia; to investigate the
relationship between initial postoperative and long-term subsequent
postoperative motor outcomes in infantile exotropia.
Methods: The clinical records of 22 infantile exotropia patients who had
surgical correction with a follow-up period longer than 3 years were reviewed,
and compared with a matched control group of 22 patients with intermittent
exotropia.
Results: Mean overall postoperative drift was greater in infantile exotropia
group than those of intermittent exotropia group at all times points along
3-year period, but not reach a statistical significance. In the infantile exotropia
group, 36.4% had successful outcomes (