角膜移植手术是治疗角膜病变重要且有效的手段。但对眼表功能完全失代偿、多次角膜移植排斥等类型的患者，常规同种异体角膜移植手术成功率却非常低。对于这类患者，人工角膜植入术成为复明的新希望。随着人工角膜的设计和植入方式的不断改进，人工角膜的功效及优点已渐渐突显。目前，波士顿I型(领扣型)人工角膜在全球范围内应用最为广泛。现就波士顿I型人工角膜的基本特征、临床应用及未来发展等方面进行阐述。

The corneal transplantation is an effective option for visually impaired patients with keratopathy to restore vision function. However, the success rate of allograft keratoplasty is still very low for those patients with end-stage ocular surface or repeated corneal graft rejection. For those patients, artificial keratoplasty might be a promising alternative option. The efficacy and advantages of artificial keratoplasty have been gradually highlighted, after consistent improvement of the product design and implantation procedure. Nowadays, the Boston type I (collar button) corneal prosthesis is the most widely used product around the world. In this review, the history, indications, postoperative complications and future prospect of Boston type I corneal prosthesis will be summarized.

神经营养性角膜病变是一种与角膜神经退行性改变有关的疾病，表现为角膜神经的知觉和营养功能受损，导致角膜上皮缺损、角膜溃疡和角膜穿孔。目前对神经营养性角膜病变的主要治疗方式有药物治疗、非手术干预治疗和手术治疗，但是对于重度病变患者行药物治疗、非手术干预治疗通常效果不佳。对未恢复角膜神经营养功能的患者行角膜移植术，可能导致角膜移植术后上皮持续不愈合，因此恢复角膜神经营养功能是该类患者复明的重要前提。角膜神经移植术是重度神经营养性角膜病变患者恢复角膜神经营养功能，提高角膜知觉，改善角膜透明度的重要和有效的治疗方法。角膜神经移植术通过将具有正常功能的供体神经移植到麻痹眼角膜缘周围，使神经末梢重新长入角膜基质，恢复角膜知觉功能。随着角膜神经移植术的术式的不断改进，其良好的术后效果和优点已经渐渐凸显。文章基于作者结合团队在角膜神经移植术方面经验结合近年研究进展阐述了神经营养性角膜病变的治疗手段和不同术式在角膜神经移植术中的应用，并进行展望。

Neurotrophic keratopathy is a disease related to degenerative changes in corneal nerves, resulting in impaired sensory and nutritive functions of corneal nerves. This leads to corneal epithelial defects, corneal ulcers, and corneal perforation. Currently, the main treatment modalities include pharmacotherapy, non-surgical interventions, and surgical treatment. However, drug therapy and non-surgical interventions often yield unsatisfactory results for severe neurotrophic keratopathy patients. Performing corneal transplantation in patients with unrecovered corneal sensation may result in persistent epithelial defect. Therefore, the restoration of corneal sensation is a crucial prerequisite for visual rehabilitation. Corneal neurotization emerges as an important and effective therapeutic approach for severe cases of neurotrophic keratopathy, aiming to restore corneal sensation and enhance corneal transparency. The procedure involves transplanting nerves from a donor with normal sensory function to the paralyzed sub-Tenon perilimbal space, allowing nerve endings to regenerate into the corneal stroma and restoring corneal sensory function. With continuous improvements in the technique of corneal neurotization, its favorable postoperative outcomes and advantages are becoming increasingly evident. This article, based on the team's experience in corneal neurotization, elaborates on the treatment modalities for neurotrophic keratopathy and the application and prospects of various surgical techniques in corneal neurotization.