Spherical Covering Foil – Silicone Implant Forming Conjunctival Fornices
J. Krásný1, V. Novák2
1Oční klinika FN KV a IPVZ, Praha, přednosta prof. MUDr. P. Kuchynka, CSc. 2Ústav polymerů VŠCHT, Praha, vedoucí prof. ing. V. Dudáček, DrSc. |
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Summary:
Method: The authors refer about primary development of elastic and
sufficiently strong device, which due to its spherical shape bandages the
conjunctival space of the palpebral fissure and is used to form the inferior and
superior cul-de-sac. It is made from a silicone mixture for medical use – Silastic
Medical Grade Elastomer. Its layer in the shape of spherical cap of outer
diameter 24.4 mm, height 8.5 mm; the layer thickness is 0.5 mm. Its advantage
is the oxygen permeability.
Results: The spherical covering foil was applied as an arrangement before
keratoplasty in four adult men to form fornices after relieving of symblephara
reaching the cornea caused by alkali (lime) burn (in three of them) and after
liquid aluminium burn (thermal injury). In five years old boy, the spherical
covering foil helped to form the palpebral fissure and to improve the eye motility; the symblepharon was related to the inborn coloboma of the upper
eyelid. To prevent the symblepharon appearance, the spherical covering foil
was used in an adult man after molten polypropylene burn and in an eight
years old boy with Stevens – Johnson syndrome.
Conclusion: The spherical covering foil is used for cul-de-sac forming after
relieving of the symblepharon or to prevent its appearance after the eye burn.
Key words:
contact lens, silicone rubber, bandage of the conjunctiva,
symblepharon
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