Hoffmann F
Trans Ophthalmol Soc U K (1962). 1985;104 ( Pt 1):48-51.
Using cryo-refractive corneal surgery, it is not yet possible to attain a post-operative visual acuity corresponding to that achieved with a contact lens. This is due to the tissue changes caused by the cryoprocess as well as to the interlamellar corneal scar. A description is given of keratokyphosis, a procedure by means of which the outer radius of the cornea can be altered without having to freeze the corneal stroma. The principle of the surgical technique consists of the removal of centrally thinned corneal discs from the patient's eye using a newly developed microkeratome. Subsequent suturing in of a donor corneal lamella leads to a protrusion of the corneal surface and thus to an alteration of the refractive power.
使用冷冻屈光性角膜手术，目前尚无法获得与佩戴隐形眼镜所达到的术后视力相当的效果。这是由于冷冻过程引起的组织变化以及角膜层间瘢痕所致。本文描述了角膜驼背术，通过该手术可以改变角膜的外半径，而无需冷冻角膜基质。手术技术的原理包括使用新开发的微型角膜刀从患者眼睛中取出中央变薄的角膜盘。随后缝合植入供体角膜片会导致角膜表面突出，从而改变屈光力。
