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. 2021 Dec;259(12):3787-3794.
doi: 10.1007/s00417-021-05318-6. Epub 2021 Jul 28.

Effect of the base-out recovery point as the surgical target for acute acquired comitant esotropia

Zhiyue Dai  1 , Fuhao Zheng  1 , Meiping Xu  1 , Jinjing Zhou  1 , Minghui Wan  1 , Huanyun Yu  1 , Fang Hou  1 , Jinmao Chen  2 , Xinping Yu  3
Affiliations

Effect of the base-out recovery point as the surgical target for acute acquired comitant esotropia

Zhiyue Dai et al. Graefes Arch Clin Exp Ophthalmol. 2021 Dec.

Abstract

Purpose: To evaluate the treatment efficacy of the preoperative base-out recovery point as the surgical target angle for acute acquired comitant esotropia.

Methods: Prospective study. Twenty-two patients with acute acquired comitant esotropia (AACE) underwent strabismus surgery based on the target angle of the preoperative base-out recovery point. The postoperative deviation, positive fusional vergence, and negative fusional vergence were evaluated and compared with those of 23 normal individuals.

Results: The mean follow-up period was 18.68 ± 19.48 months. At the last follow-up, 19 (86.4%) of 22 subjects had orthophoria, whereas 3 (13.6%) had minimal esophoria. The postoperative angle of deviation was significantly smaller than the preoperative angle of deviation at near (P < 0.001) and distance (P < 0.001). Postoperative sensory fusion was significantly better than preoperative fusion at near (P < 0.001) and distance (P < 0.001). The postoperative stereoacuity improved significantly after the surgery at near (P < 0.001) and distance (P < 0.001). Compared with the controls, the convergence and divergence amplitudes in the AACE patients were similar at distance (P > 0.05) but were still narrower at near (P < 0.001).

Conclusion: Good alignment and binocular balance were obtained with the surgical target angle of the base-out recovery point in AACE.

Keywords: Acute acquired comitant esotropia; Binocular vision; Preoperative base-out recovery point; Strabismus surgery.

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