Iris equivalent mirror. Albinism, the whole body lacks melanin and is milky white or pink, tender and dry. The iris is pink or pale blue due to lack of pigment in the eye. It is often characterized by photophobia, tears, nystagmus and astigmatism. Congenital aniridia is a developmental disorder of both eyes, mostly due to developmental disorders of the neuroectoderm and mesoderm during embryonic development. Whether it is albinism, or iris defect or disappearance caused by various reasons, can cause patients to open their eyes in high light, serious when nothing can be seen, and some people in normal light will be the same. It's like when the old camera is being photographed, the film is exposed and nothing can be seen. The main body of the utility model is a contact lens. The central area of the contact lens is the pupil light transmission area (1), and the other annular area is the iris light impermeability area (2). The utility model is applied to an iris equivalent mirror for patients with albinism and traumatic irirus.
【技术实现步骤摘要】
虹膜等效镜
:本技术涉及一种虹膜等效镜。
技术介绍
:白化病可分为两大群,一为较常见的眼睛皮肤白化病,身体不能制造黑色素。另一类为伴有异常免疫系统的白化病,包括谢迪亚克-东综合征、海-普综合征、格里塞利综合征、克罗斯综合征,这类是和黑色素及其它细胞蛋白的缺陷有关。白化病是依据临床表型特征分为三大类别:(1)眼白化病(ocularalbinism,OA),病人仅眼色素减少或缺乏,具有不同程度的视力低下,畏光等症状,国外群体发病率约为1/60,000;(2)眼皮肤白化病(oculocutaneousalbi-nism,OCA),除眼色素缺乏和视力低下、畏光等症状外,病人皮肤和毛发均有明显色素缺乏,国外报道发病率为1/20,000~1/10,000;眼皮肤白化病又可以根据致病基因的不同分为四型(OCA1~OCA4),在我国,OCA1和OCA2较为常见。(3)白化病相关综合征,病人除具有一定程度的眼皮肤白化病表现外,还有其他特定异常,如同时具有免疫功能低下的Chediak-Higashi综合征和具有出血素质的Hermansky-Pudlak综合征,这类疾病较为罕见。白化病全身皮肤缺乏黑色素而呈乳白或粉红色,柔嫩发干。毛发变为淡白或淡黄。由于缺乏黑色素的保护,患者皮肤对光线高度敏感,日晒后易发生晒斑和各种光感性皮炎而皮肤晒后不变黑。也常发生光照性唇炎、毛细血管扩张,有的发生日光性角化,并可发生基底细胞癌或鳞状细胞癌。眼部由于色素缺乏,虹膜为粉红或淡蓝色,常有畏光、流泪、眼球震颤及散光等症状。先天性无虹膜症是双眼发育性疾患,多由于宝宝在胚胎发育时其神经外胚层和中胚层发 ...
【技术保护点】
1.一种虹膜等效镜,其特征是:本虹膜等效镜主体为隐形眼镜,所述的隐形眼镜的中心区域是瞳孔透光区,其余环形区域是替代人体虹膜作用遮挡外界强烈光线的虹膜不透光区,所述的虹膜不透光区是黑色不透光区,所述的瞳孔透光区是可变色的瞳孔透光区,所述的瞳孔透光区直径在3‑8mm之间,所述的可变色的瞳孔透光区包含有聚成微粒状的卤化银、微量铜离子、微量镉离子,卤化银作感光剂,微量铜离子、微量镉离子作增感剂。
【技术特征摘要】
1.一种虹膜等效镜,其特征是:本虹膜等效镜主体为隐形眼镜,所述的隐形眼镜的中心区域是瞳孔透光区,其余环形区域是替代人体虹膜作用遮挡外界强烈光线的虹膜不透光区,所述的虹膜不透光区是黑色不透光区,所...
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