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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