Sousa Jacqueline Martins, Hirai Flavio Eduardo, Sato Elcio Hideo
Department of Ophthalmology, Paulista School of Medicine, Federal University of São Paulo - UNIFESP, São Paulo (SP), Brazil.
Arq Bras Oftalmol. 2013 May-Jun;76(3):195-6. doi: 10.1590/s0004-27492013000300014.
Keratoconus has usually been described as bilateral but asymmetric disease. Corneal ectasia is one of the long-term complications of modern refractive surgery, especially those submitted to laser in situ keratomileusis (LASIK). We describe a patient with keratoconus in the right eye that was submitted to radial keratectomy (RK) in the left eye 19 years ago with no progression of the ectatic cornea and no complications related to the refractive surgery. Because unilateral keratoconus is rare, we believe that RK was performed on an already ectatic cornea (not clinically detected) or with fruste keratoconus. However, neither corneal ectasia progressed, nor ectasia was induced by RK in the fellow eye.
圆锥角膜通常被描述为一种双侧但不对称的疾病。角膜扩张是现代屈光手术的长期并发症之一，尤其是接受准分子原位角膜磨镶术（LASIK）的患者。我们报告一名右眼患有圆锥角膜的患者，其左眼于19年前接受了放射状角膜切开术（RK），术后患眼角膜扩张未进展，且未出现与屈光手术相关的并发症。由于单侧圆锥角膜较为罕见，我们认为该患者接受RK手术时，患眼已经存在角膜扩张（临床未检测到）或为顿挫型圆锥角膜。然而，患眼的角膜扩张既未进展，对侧眼也未因RK手术诱发角膜扩张。
