We report herein a case of fitting with a photochromic silicone hydrogel contact lens under a rigid gas-permeable lens (piggyback system) for photophobia and low vision correction after traumatic aniridia and aphakia. A 40-year-old woman was referred to our practice for contact lens fitting in her right eye, which was left aphakic after an open globe injury. She also presented traumatic aniridia in the right eye, and her left eye had been previously eviscerated. A successful fitting was obtained with a photochromic silicone hydrogel (senofilcon A) contact lens, with a Dk/t of 121 × 10-9, under an aspheric design, +13.00 D rigid gas-permeable lens. The patient displayed visual acuity and contrast sensitivity improvement and reported decreased photophobia.

中文翻译：

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用于创伤性无虹膜视力康复和畏光管理的搭载光致变色隐形眼镜。

我们在此报告了一个在刚性透气镜片（背负式系统）下安装光致变色硅酮水凝胶隐形眼镜的案例，用于外伤性无虹膜和无晶状体后的畏光和低视力矫正。一位 40 岁的女性被转诊到我们的诊所，为她的右眼配戴隐形眼镜，右眼在开放性眼球损伤后左眼无晶状体。她的右眼还出现外伤性无虹膜，而她的左眼先前已被掏空。使用光致变色硅水凝胶 (senofilcon A) 隐形眼镜获得成功配戴，Dk/t 为 121 × 10-9，在非球面设计下，+13.00 D 刚性透气镜片。患者表现出视力和对比敏感度的改善，并报告畏光减少。