Partial recession surgery for small angle vertical strabismus
Reviewed by Fiona Rowe

The objective of this study was to assess the results of partial recessions of the vertical rectus muscles in patients with diplopia and small angle vertical strabismus. This was a retrospective study of partial temporal or nasal recession from one of the superior rectus or inferior rectus muscle. The study included 17 patients aged 69.11 years ±8.24. Forty-seven percent were female and 29.41% had an operated right eye (70.58% operated left eye). Distance vertical angle was 6.11 ±1.86PD in primary gaze. Eleven had superior rectus surgery and size had inferior rectus surgery. Recessions were 4.14 ±0.42mm. At follow-up, angles reduced to 2.05 ±2.48PD at distance. Success was noted in 76.47% with follow-up of 10 ±6.23 months. There were no over corrections. Four cases had poor outcome due to under correction and three needed a second surgery. One case was managed with prisms. The authors acknowledge the limitations of this retrospective study with short follow-up for some and the group being heterogenous. They conclude surgery is successful for most cases and therefore can be considered as a surgical option for small angle vertical strabismus.

Surgical treatment for small-angle vertical strabismus.
Sanz PM, Osuna V, Gomez de Liano Sanchez P, Torres HED.
STRABISMUS
2020;29(2):181-5.