ArticleClinical ophthalmology (Auckland, N.Z.)2026
Three-Dimensional Reconstruction for Localizing Retinal Tears in Treatment of Rhegmatogenous Retinal Detachment by Foldable Capsular Buckle.
Article in Clinical ophthalmology (Auckland, N.Z.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: This study aimed to accurately localize retinal tears using computer three-dimensional (3D) reconstruction technology and to validate this method in combination with Foldable Capsular Buckle (FCB) implantation for treating rhegmatogenous retinal detachment (RRD). Methods: Assuming a circle passing through the tear, macula, and anterior corneal vertex, computer-aided design (CAD) software calculated half circumferences for varying axial lengths. The distance from the tear's anterior edge to the posterior corneoscleral limbus was derived as the half circumference minus the corneal radius, further subtracting the arc length from the tear to the macula. The chord length from the tear to the macula was converted from the arc length, and breaks were localized by scaling chord lengths using the optic disc's horizontal diameter. Results: For axial lengths of 23.5-30 mm, half circumferences ranged from 36.5-45.5 mm. For arc lengths of 11.5-23.5 mm, corresponding chord lengths were 10-20 mm, with no significant correlation with axial length. Clinically, retinal reattachment was achieved in 42/43 patients (97.7%), with postoperative fundoscopy confirming effective FCB indentation. Visual acuity improved significantly from a preoperative median of 0.10 (range: hand motion to 0.8) to a postoperative median of 0.40 (range: counting fingers to 1.0) (Z = 5.43, p < 0.001), with 88.4% of patients showing improvement. Intraocular pressure (IOP) increased mildly from 12.6 ± 2.7 mmHg preoperatively to 14.7 ± 1.6 mmHg postoperatively (mean increase: 2.1 mmHg; 95% CI: 1.4-2.8 mmHg; t = 5.12, p < 0.001), with all values remaining within the normal range. Conclusion: This simple ruler-based method enables accurate preoperative tear localization and FCB fixation point calculation, providing a practical and effective solution for surgeons performing extraocular buckling procedures.
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