Polytetrafluoroethylene And Human Sclera In Surgical Treatment Of Scleral Perforation In Rabbits [politetrafluoroetileno E Esclera Humana No Tratamento Cirúrgico De Perfura̧ão Escleral Em Coelhos]

Purpose: An experimental study to evaluate the behavior of polytetrafluoroethylene (Gore-Tex®) compared with human sclera, in scleral perforations induced in rabbits eyes was performed. Methods: Twenty-two eyes of rabbits were submitted to scleral perforation followed by Gore-Tex® graft in the left eye and human sclera graft in the right eye respectively. During one month the postoperative evolution was analyzed every day: intensity of hyperemia, presence of infection, secretion, rejection and tonicity of the eyes. Results: No cases of secretion, infection or rejection were observed. The histological sections showed fibrosis in the eyes with Gore-Tex®, good adhesion and epithelization. Conclusion: The Gore-Tex® showed to be a plausible material to be used as graft in scleral defects with some advantages such as easy obtention, good handling and durability.646563567Koenig, S.B., Kaufman, H.E., The treatment of necrotizing scleritis with an autogenous periosteal graft (1983) Ophthalmic Surg, 14, pp. 1029-1032Blum Jr., F.G., Salamoun, S.G., Scleromalacia perforans: A useful surgical modification in fascia lata or scleral grafting (1963) Arch Ophthalmol, 69, p. 287Merz, E.H., Scleral reinforcement with aortic tissue (1964) Am J Ophthalmol, 57, pp. 66-70Huang, W.J., Hu, F.R., Chang, S., Clinicopathologic study of gore tex path grafting corneoscleral surgery (1994) Cornea, 13, pp. 82-86Mauriello Jr., J.A., Pokorny, K., Use of split-tickness dermal grafts to repair corneal and scleral defets-a study of 10 patients (1993) Br J Ophtalmol, 377, pp. 327-331Nishiwaki-Dantas, M.C., Abbott, R.L., Dantas, P.E.C., Use of corneal patch graft repair scleral defect secondary to pterygium excision and topical mitomycin-C therapy (1995) Arq Bras Oftalmol, 58, pp. 170-173Koenig, S.B., Sanitato, J.J., Kaufman, H.E., Long-term follow-up study of scleroplasty using autogenous periosteum (1990) Cornea, 9, pp. 139-143Legeais, J.M., Renard, G., D'Hermies, F., Rossi, C., Pouliquen, Y., Surgical management of corneal perforation with explanded polytetrafluorethylene (Gore Tex) (1991) Ophthalmic Surg, 22, pp. 213-217Bick, M.W., Surgical treatment of scleromalacia perforans (1959) Arch Ophthalmol, 61, pp. 907-917Mauriello Jr., J.A., Fiore, P.M., Pokorny, K.S., Cinotti, D.J., Use of split-tickness dermal grafts in the surgical treatment of corneal and scleral defects (1988) Am J Ophthalmol, 105, pp. 244-247Nishiwaki-Dantas, M.C., Abbott, R.L., Dantas, P.E.C., Reparação de defeito escleral ou corneo-escleral com enxerto corneano (1995) Arq Bras Oftalmol, 58, pp. 295-298Florian, A., Cohn, L.H., Dammin, G.J., Collins, J.J., Small vessel replacement with Gore-Tex (expanded polytetrafluoroethylene) (1976) Arch Surg, 111, pp. 267-270Kenyon, K.R., Wagoner, M.D., Hettinger, M.T., Conjunctival autograft transplantation for advanced and recurrent pterygium (1985) Ophthalmology, 92, pp. 1461-1470Obear, M.F., Winter, F.C., (1964) Technique of Overlay Scleral Homograft Arch Ophthalmol, 71, pp. 837-838Raizman, M.B., De La Dsainz Maza, M., Foster, C.S., Tectonic keratoplasty for peripheral ulcerative keratitis (1991) Cornea, 10, pp. 312-316Breslin, C.W., Katz, J.I., Kaufman, H.E., Surgical treatment of necrotizing scleritis (1977) Arch Ophthalmol, 95, pp. 2038-2040Tawakol, M.E., Peyman, G., Lui, K.R., Kaufman, H.E., Gore-Tex soft tissue bands as scleral explants in rabbits a preliminary histologic study (1989) Ophtthalmic Surg, 20, pp. 199-201Whitmore, W.G., Harrison, W., Curtis, B.J., Scleral reinforcement in rabbits using synthetic graft materials (1990) Ophthalmic Surg, 21, pp. 327-33