Corneal astigmatism after clear corneal and corneoscleral incisions for cataract surgery

H M Poort-van Nouhuijs, K H Hendrickx, W F van Marle, I Boesten, W H Beekhuis

    Research output: Contribution to journalArticleResearchpeer-review


    PURPOSE: To compare the astigmatism induced by clear corneal incisions (CCIs) and corneoscleral tunnel incisions (CSIs) for cataract surgery over 6 months.

    SETTING: Rotterdam Eye Hospital, rotterdam, The Netherlands.

    METHODS: Thirty-five patients having phacoemulsification were recruited prospectively; 15 had CCIs and 20, CSIs. Corneal topography was performed by computerized videokeratoscopy preoperatively and 6 months postoperatively. The change in keratometric astigmatism was calculated using the absolute magnitude and vector analysis methods.

    RESULTS: There was no significant difference between the change in astigmatism produced by the two incisions (Student's t-test).

    CONCLUSION: The CCI for cataract surgery did not produce significantly greater astigmatism than the CSI. Concern over CCIs having a greater risk of increasing corneal astigmatism is unfounded and does not justify withholding the technique from patients it could benefit.

    Original languageEnglish
    Pages (from-to)758-60
    Number of pages3
    JournalJournal of Cataract and Refractive Surgery
    Issue number5
    Publication statusPublished - Jun 1997


    • Astigmatism/etiology
    • Cornea/pathology
    • Follow-Up Studies
    • Humans
    • Image Processing, Computer-Assisted
    • Phacoemulsification
    • Postoperative Complications/pathology
    • Prospective Studies
    • Sclera/surgery
    • Visual Acuity


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