The aim of this study was to provide surgeons with a reference for surgical planning by analysing surgical quantification formulas through multiple regression analysis. The study included 269 patients; 170 with type II acute acquired concomitant esotropia (AACE) and 99 with esotropia. Students accounted for 47% of AACE patients and 88% of esotropia patients. In AACE patients, 49% were moderate myopes and 25% were mild myopes. In esotropia patients, 72% were moderate myopes and 16% mild. Most patients underwent bilateral medial rectus recessions. Mean preoperative angles were 34.81PD for AACE and 36.32PD for esotropia. Under correction occurred for 14% AACE and 8% esotropia patients. Regression analysis revealed that preoperative angle significantly influenced the total surgical amount needed. The surgical amount for AACE was 1.865 times that for esotropia. Based on modelling, the authors delineated formulas for surgical guidance. For AACE with preoperative angles <40PD, their suggested formula is Y=1.746x0.236xpreop angle. For angles >40PD, their suggested formula is Y=4.600x0.143xpreop angle. They conclude these formulae may offer a framework for devising surgical strategies. However, further research of efficacy is required.
Dose modelling for surgery of AACE vs esotropia
Reviewed by Fiona Rowe
Exploring a quantitative formula for the total surgical amount in patients with type III acute acquired concomitant esotropia.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
View Full Profile
