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  • Title: Surgical correction of postkeratoplasty astigmatism with the Hanna arcitome.
    Author: Borderie VM, Touzeau O, Chastang PJ, Laroche L.
    Journal: J Cataract Refract Surg; 1999 Feb; 25(2):205-11. PubMed ID: 9951665.
    Abstract:
    PURPOSE: To report the results of arcuate keratotomy performed with the Hanna arcitome in patients with postkeratoplasty astigmatism. SETTING: Department of Ophthalmology, Saint-Antoine Hospital, Paris VI University, Paris, France. METHODS: 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. RESULTS: 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. CONCLUSIONS: 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.
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