Maximum motor fusion combined with one-hour preoperative prism adaptation test in patients with acquired esotropia

Ela-Dalman, Noa; Velez, Guillermo; Thacker, Neepa; Britt, Michelle T.; Velez, Federico G.

doi:10.1016/j.jaapos.2006.09.011

Cited by 19 publications

(11 citation statements)

References 12 publications

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“…A prism adaptation test has been used to correct horizontal or vertical deviation in subjects with strabismus, particularly subjects with an acquired deviation [17][18][19]. For a long time, this test has been used to determine the surgical amount of the recession/resection of the extra-ocular muscle and predict the subject's binocular status after the surgical correction of deviation; [17,20,21] however, only the recent study by Matsuo et al [12] examined the effect of prism adaptation on postural control.…”

Section: Discussionmentioning

confidence: 99%

Re-alignment of the eyes, with prisms and with eye surgery, affects postural stability differently in children with strabismus

Legrand

Bui-Quoc

Bucci

2011

Graefes Arch Clin Exp Ophthalmol

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Section: Discussionmentioning

confidence: 99%

Re-alignment of the eyes, with prisms and with eye surgery, affects postural stability differently in children with strabismus

Legrand

Bui-Quoc

Bucci

2011

Graefes Arch Clin Exp Ophthalmol

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“…In the previous literature there is a very inhomogeneous approach to PAT with time spans for PAT reaching from one hour [ 22 ] to 3.5 weeks [ 3 ] or even longer [ 1 ]. Building up of prisms over weeks before surgery means more visits in the clinic and can often be stressful for patients, especially when they are of young age.…”

Section: Discussionmentioning

confidence: 99%

Prism adaptation test before strabismus surgery in patients with decompensated esophoria and decompensated microesotropia

2022

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Purpose To evaluate the effect of Prism adaptation test (PAT) on the angle of squint in decompensated esophoria (decEPH) and decompensated microesotropia (decMET). Methods In this single-center retrospective study we reviewed the medical records of patients with the diagnosis of decEPH or decMET, aged at least 12 years, who were treated by strabismus surgery for the first time. The maximum Angle of squint (AOS) for far (F) and near (N) fixation and PAT results before surgery, as well as AOS (F) and AOS (N) after surgery and results of binocular function tests were considered. PAT included wearing a prism based on the largest angle for over 60 min. Results 100 patients (mean age 37 ± 17 years) were included in the decEPH group, 82 patients (mean age 30 ± 13 years) in the decMET group. For decEPH, before surgery AOS was 25.5 ± 8.8 pdpt (F) and 23.5 ± 9.8 pdpt (N). During PAT the AOS increased significantly by 2.7 ± 4.3 to 28.2 ± 8.6 pdpt (F) and by 4.9 ± 4.5 to 28.3 ± 9.5 pdpt (N). Altogether, in 82% of decEPH patients AOS (F) and/ or AOS (N) in- or decreased by at least 3 pdpt. For decMET, before surgery AOS was 28.6 ± 10.8 pdpt for far (F) and 30.9 ± 11.8 pdpt for near fixation (N). During PAT the AOS increased significantly by 4.2 ± 5.8 to 32.5 ± 9.5 pdpt (F) and by 3.7 ± 6.1 to 34.4 ± 9.5 pdpt (N). Altogether, in 51% of decMET patients, AOS (F) and/ or AOS (N) increased by at least 10 pdpt, therefore more than 5° which would have been maximally expected from mictrotropia, or decreased by at least 3 pdpt. Conclusions The Prism adaptation test (PAT) showed remarkable changes in AOS in both decEPH and decMET. In patients with decEPH, the preoperative assessment of the “true AOS” under PAT reflects a pivotal requirement for successful strabismus surgery, as 82% had dose relevant angle changes ≥ 3 pdpt. For patients with decMET the preoperative prism adaptation test is especially of diagnostic value, but also 51% of decMET patients had changes in AOS beyond the expected microtropic angle (≥ 10 pdpt) or even a dose relevant angle decrease (≥ 3pdpt).

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“…The preoperative prism adaptation test has been used to determine the target angle for surgical correction and decrease the risk of undercorrection or overcorrection in patients with acquired esotropia undergoing surgical correction [ 18 ]. Previous studies have shown that preoperative prism adaptation could improve the success rate of strabismus surgery for patients with esotropia [ 11 , 13 ].…”

Section: Discussionmentioning

confidence: 99%

Comparison of the therapeutic effects of surgery following prism adaptation test versus surgery alone in acute acquired comitant esotropia

2020

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Background To compare the therapeutic effects of surgery following prism adaptation test versus surgery alone in acute acquired comitant esotropia (AACE). Methods A total of 46 patients with AACE were enrolled in this retrospective study. Among them, 26 patients underwent surgery following prism adaptation test (combination group) and 20 patients underwent surgery alone (surgery group). The following parameters were evaluated including success rate, distant and near deviation angles, visual function, and near stereoacuity. Results There were no significant differences in success rate between the combination group and surgery group at post-treatment 12 months (96.15% vs. 90.00%, p > 0.05). The postoperative distant and near deviation angles in two groups were significantly lower than that before surgery ( p < 0.05). In addition, the numbers of patients with stereopsis postoperatively in two groups were significantly higher than that before surgery (all p < 0.05). Moreover, the numbers of patients with stereopsis and central stereopsis in the combination group were significantly higher than that in the surgery group postoperatively. At post-treatment 12 months, one (3.85%) case recurred in combination group and three (15.00%) cases in the surgery group. No complications were observed in the two groups. Conclusions Both approaches had therapeutic benefit in AACE. Surgery following prism adaptation test had better treatment benefits than surgery alone in improving binocular function and reducing recurrence rate.

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Maximum motor fusion combined with one-hour preoperative prism adaptation test in patients with acquired esotropia

Cited by 19 publications

References 12 publications

Re-alignment of the eyes, with prisms and with eye surgery, affects postural stability differently in children with strabismus

Re-alignment of the eyes, with prisms and with eye surgery, affects postural stability differently in children with strabismus

Prism adaptation test before strabismus surgery in patients with decompensated esophoria and decompensated microesotropia

Comparison of the therapeutic effects of surgery following prism adaptation test versus surgery alone in acute acquired comitant esotropia

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