McNeill J I
Department of Ophthalmology, Loma Linda University School of Medicine, California.
J Cataract Refract Surg. 1993 Jul;19(4):542-3. doi: 10.1016/s0886-3350(13)80620-7.
As the use of radial keratotomy (RK) to correct myopia increases, more patients are having penetrating keratoplasty (PK). Radial keratotomy incisions are known to show incomplete wound healing. When the radial corneal RK incisions are cut by the corneal trephine, the peripheral part of each incision may open, even years after surgery. In this case, a 56-year-old man had visual distortion and diplopia in one eye nine years after RK. Contact lenses did not correct the problem, and the patient could not tolerate the contact lenses. Penetrating keratoplasty was performed. During surgery about one-third of the peripheral RK incisions spontaneously opened, making suturing difficult. Although the final visual result was 20/20 corrected acuity, this case shows that RK incisions may remain incompletely healed and easily open during PK surgery as long as nine years after the RK surgery.
随着用于矫正近视的放射状角膜切开术（RK）的使用增加，越来越多的患者接受穿透性角膜移植术（PK）。已知放射状角膜切开术切口显示伤口愈合不完全。当角膜环钻切割放射状角膜RK切口时，每个切口的周边部分可能会张开，甚至在手术后数年也是如此。在这个病例中，一名56岁男性在RK术后九年出现一只眼睛的视觉扭曲和复视。隐形眼镜无法矫正该问题，且患者无法耐受隐形眼镜。于是进行了穿透性角膜移植术。手术过程中，约三分之一的周边RK切口自发张开，导致缝合困难。尽管最终视力结果为矫正视力20/20，但该病例表明，RK切口可能在RK手术长达九年之后仍未完全愈合，并且在PK手术期间容易张开。
