Linear-Long Incisions with a Small Optical Zone for the Correction of Astigmatism in Older Patients

Hui Chun Ho, Ko Hua Chen, Wen Ming Hsu, Shui Mei Lee, Chien Cheng Chiang, Yen Shien Li

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Purpose: To evaluate the efficacy of astigmatic keratotomy (AK) by paired linear (transverse)-long incisions within a small optical zone in older patients with 3.00 diopters (D) or more of astigmatism who are intolerant of contact lenses, spectacles, or both. Design: Prospective, noncomparative case series. Participants: Twenty-one eyes (20 patients; age range, 58-87 years) treated at clinics of the Taipei Veterans General Hospital were included in this study. Methods: Paired linear incisions (90° in length) with a central optical zone (OZ) of 4.5 mm were made to correct high astigmatism in older patients. The incisions were 80% of the corneal thickness and parallel to the axis of the steepest cylinder. Main Outcome Measures: Refraction, keratometry, corneal topography, and visual acuity with and without correction were measured as the outcome indicators. Results: The mean course of the stabilization of corneal curvature was 1.8 months. Significant improvement from a preoperative corneal astigmatism of 4.52±1.39 D to a postoperative value of 1.82±0.88 D (P

Original languageEnglish
Pages (from-to)28-33
Number of pages6
Issue number1
Publication statusPublished - Jan 2004
Externally publishedYes

ASJC Scopus subject areas

  • Ophthalmology


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