Modified superior oblique intrasheath tenectomy in A-pattern with superior oblique overaction

Abstract Background To evaluate the effect of modified superior oblique intrasheath tenectomy (MSOIT) on overaction (SOOA) with A-pattern. Methods We retrospectively reviewed data 66 patients (130 eyes) SOOA and A-pattern underwent MSOIT at nasal border rectus under an operating microscope between January 1, 2004 December 31, 2018. The (SO) tendon fibres were resected, sheath was preserved in all patients. preoperative postoperative SOOA, objective torsion, ocular motility, deviation findings compared. correlation corrected analysed. average follow-up period 33.45 ± 29.88 (range: 12–122) months. Results mean improved from 2.95 0.54 to 0.34 0.55 ( P < 0.001), while difference upgaze downgaze 23.15 7.59 prism diopters (PD) 3.50 2.90 PD 0.001). fundus intorsion value + 2.96 0.58 0.38 0.60 magnitude correction significantly correlated severity r = 0.812, Conclusions (SR) is safe yields beneficial outcomes