Borderie V M, Touzeau O, Chastang P J, Laroche L
Department of Ophthalmology, Hôpital Saint Antoine, Paris, France.
J Cataract Refract Surg. 1999 Feb;25(2):205-11. doi: 10.1016/s0886-3350(99)80127-8.
To report the results of arcuate keratotomy performed with the Hanna arcitome in patients with postkeratoplasty astigmatism.
Department of Ophthalmology, Saint-Antoine Hospital, Paris VI University, Paris, France.
This retrospective study comprised 22 eyes (22 patients) with postkeratoplasty astigmatism. Paired symmetrical arcuate keratotomy was performed with the Hanna arcitome. Outcome measures included refraction, videokeratography, and keratometry.
At 6.6 months +/- 8.9 (SD) after surgery, the mean increase in best spectacle-corrected visual acuity (BSCVA) was 2.1 +/- 2.4 lines. Thirteen eyes gained 2 lines or more of BSCVA, and 15 gained 3 lines or more of uncorrected visual acuity. Two patients had a decrease in BSCVA: 1 had lens opacification unrelated to arcuate keratotomy and 1, increased corneal irregularity. Mean refractive astigmatism was 6.94 +/- 2.11 diopters (D) preoperatively and 3.85 +/- 1.95 D postoperatively (P < .01). Mean change in keratometric astigmatism was -51 +/- 36%. Astigmatism decreased in 21 eyes as measured by manifest refraction, keratometry, and videokeratography; it increased in 1 cornea with a microperforation.
The results of arcuate keratotomy performed with the Hanna arcitome were comparable to those with freehand relaxing incisions. The instrument made safer and more uniform arcuate incisions than a freehand technique.
报告使用汉纳弧形角膜切开刀对角膜移植术后散光患者施行弧形角膜切开术的结果。
法国巴黎第六大学圣安托万医院眼科。
这项回顾性研究纳入了22例（22只眼）角膜移植术后散光患者。使用汉纳弧形角膜切开刀进行配对对称弧形角膜切开术。观察指标包括验光、角膜地形图和角膜曲率测量。
术后6.6个月±8.9（标准差）时，最佳矫正视力（BSCVA）平均提高2.1±2.4行。13只眼的BSCVA提高了2行或更多，15只眼的裸眼视力提高了3行或更多。2例患者的BSCVA下降：1例与弧形角膜切开术无关的晶状体混浊，1例角膜不规则性增加。术前平均屈光性散光为6.94±2.11屈光度（D），术后为3.85±1.95 D（P<.01）。角膜曲率性散光的平均变化为-51±36%。根据显然验光、角膜曲率测量和角膜地形图测量，21只眼角膜散光减少；1只角膜有微小穿孔的眼角膜散光增加。
使用汉纳弧形角膜切开刀施行弧形角膜切开术的结果与徒手松解切口的结果相当。该器械比徒手技术能制作更安全、更均匀的弧形切口。
