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G Caputo, C Arndt; Modelization of Limited Macular Translocation . Invest. Ophthalmol. Vis. Sci. 2002;43(13):3508.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: to evaluate and optimize the effect of limited macular translocation, by modelization of the surgical procedure. Methods: fovea was considered a focal point, and the effective shortening of the scleral wall was analysed in different surgical approaches. Modelization of the folds with Amapi software was used to formalize and confirm the geometrical assumptions. The resulting maximum retinal displacement was deducted from the shortening of the internal wall obtained and correlated to our clinical data. Results: The maximum scleral shortening is obtained by scleral outpouching (4500µ) and the double infolding technique (2000µ). The retinal redundancy obtained by single infolding is due to the " tent " effect of the retina on the fold (1500µ). Retinal elasticity accounts for a non neglectible part of the foveal displacement (500µ). Position of the scleral fold might explain the limitations and the macular folds induced by the procedure. Conclusion: modelization of the limited macular translocation procedure helps understand the clinical results and should be more deeply investigated to customize the surgery according to the anatomical features of the eye.
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