Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt.
Department of Microbiology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
J Prosthodont. 2024 Oct;33(8):824-828. doi: 10.1111/jopr.13777. Epub 2023 Oct 9.
There are various techniques available for constructing a custom ocular prosthesis. The present technique report describes a digital workflow for constructing an ocular prosthesis using computed tomography integrated with digital technologies. The outer region of the healthy eyeball was segmented to produce the top surface of the prosthesis, while the contour and bottom surface were segmented from the tissue bed of the anophthalmic socket. The iris position was determined by tracing the optical nerve and confirmed by superimposing the patient's facial scan onto the soft tissue model of the computed tomography. Using these parameters, a standard tessellation language file for the ocular prosthesis was generated and 3D printed. The iris was then printed via UV technology using digital photographs of the patient's contralateral eye; characterization of the sclera and the final layer of clear acrylic resin were done conventionally.
有多种技术可用于制作定制式义眼。本技术报告介绍了一种使用计算机断层扫描（CT）与数字技术相结合来制作义眼的数字化工作流程。首先，对健康眼球的外部区域进行分割，以生成义眼的顶表面，然后从无眼球窝的组织床中分割出轮廓和底表面。通过追踪视神经确定虹膜位置，并通过将患者的面部扫描叠加到 CT 的软组织模型上来确认。使用这些参数，生成义眼的标准网格语言文件并进行 3D 打印。然后使用患者对侧眼睛的数字照片通过 UV 技术打印虹膜；巩膜和最后一层透明丙烯酸树脂的特征则通过传统方法完成。
