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Computational simulation of scleral buckling surgery for rhegmatogenous retinal detachment: on the effect of the band size on the myopization
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نویسنده
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lanchares e. ,buey m.a.d. ,cristóbal j.a. ,calvo b. ,ascaso f.j. ,malvè m.
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منبع
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journal of ophthalmology - 2016 - دوره : 2016 - شماره : 0
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چکیده
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A finite element model (fe) of the eye including cornea,sclera,crystalline lens,and ciliary body was created to analyze the influence of the silicone encircling bandwidth and the tightness degree on the myopia induced by scleral buckling (sb) procedure for rhegmatogenous retinal detachment. intraocular pressure (iop) was applied to the reference geometry of the fe model and then sb surgery was simulated with encircling bandwidths of 1,2,and 2.5 mm. different levels of tightening and three values of iop were applied. the anterior segment resulted as unaffected by the surgery. the highest value of cauchy stress appeared in the surroundings of the implant,whereas no increment of stress was observed either in anterior segment or in the optic nerve head. the initial iop did not appear to play any role in the induced myopia. the wider the band,the greater the induced myopia: 0.44,0.88,and 1.07 diopters (d) for the 1,2,and 2.5 mm bandwidth,respectively. therefore,patients become more myopic with a wider encircling element. the proposed simulations allow determining the effect of the bandwidth or the tightness degree on the axial lengthening,thus predicting the myopic increment caused by the encircling surgery. © 2016 elena lanchares et al.
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آدرس
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aragón institute of engineering research (i3a),university of zaragoza,campus río ebro,calle mariano esquillor s/n,zaragoza,spain,biomedical research center in bioengineering,biomaterials and nanomedicine (ciber-bbn),aragón health sciences institute,calle mariano esquillor s/n,zaragoza, Spain, aragón institute of engineering research (i3a),university of zaragoza,campus río ebro,calle mariano esquillor s/n,zaragoza,spain,department of ophthalmology,hospital clínico universitario lozano blesa,avenida san juan bosco 15,zaragoza,spain,department of surgery,school of medicine,university of zaragoza,domingo miral s/n,zaragoza,spain,aragón health research institute (iis aragón),aragón biomedical research center (ciba),avenida san juan bosco 13,zaragoza, Spain, aragón institute of engineering research (i3a),university of zaragoza,campus río ebro,calle mariano esquillor s/n,zaragoza,spain,department of ophthalmology,hospital clínico universitario lozano blesa,avenida san juan bosco 15,zaragoza,spain,department of surgery,school of medicine,university of zaragoza,domingo miral s/n,zaragoza,spain,aragón health research institute (iis aragón),aragón biomedical research center (ciba),avenida san juan bosco 13,zaragoza, Spain, aragón institute of engineering research (i3a),university of zaragoza,campus río ebro,calle mariano esquillor s/n,zaragoza,spain,biomedical research center in bioengineering,biomaterials and nanomedicine (ciber-bbn),aragón health sciences institute,calle mariano esquillor s/n,zaragoza, Spain, department of ophthalmology,hospital clínico universitario lozano blesa,avenida san juan bosco 15,zaragoza,spain,department of surgery,school of medicine,university of zaragoza,domingo miral s/n,zaragoza,spain,aragón health research institute (iis aragón),aragón biomedical research center (ciba),avenida san juan bosco 13,zaragoza, Spain, aragón institute of engineering research (i3a),university of zaragoza,campus río ebro,calle mariano esquillor s/n,zaragoza,spain,biomedical research center in bioengineering,biomaterials and nanomedicine (ciber-bbn),aragón health sciences institute,calle mariano esquillor s/n,zaragoza,spain,department of mechanical engineering,energetics and materials,public university of navarra,campus arrosadía,pamplona, Spain
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Authors
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