• Meetings
    • Meetings Overview
    • Meetings Calendar
    • International Meetings
    • ISRS at AAO
    • Refractive Surgery Subspecialty Day, ISRS Annual Meeting
    • ISRS Member Lunch
  • Multimedia Library
  • Resources
    • Journal of Refractive Surgery
    • Multimedia Library
    • ASSORT Website Calculators
    • ISRS Webinars
    • ISRS Externship
  • Community
    • Listserv
  • Membership
    • Membership Overview
    • Pay Member Dues
    • Member Benefits
    • Refer ISRS to a Colleague
    • Apply for Membership
    • Member Logo
  • For Patients
  • About ISRS
    • ISRS Overview
    • History
    • Leadership
    • Awards
    • Corporate Support
    • Contact Us
  • Find a Refractive Surgeon
    • About ISRS /
    • Awards
  • Dr. Leendert J. Lans

    In 1898, Dutch ophthalmologist Dr. Leendert Jan Lans investigated the effects of corneal incisions to correct refractive errors. His findings predate the conclusions of Fyodorov of Russia by almost 75 years and are similar to what is now understood about radial keratotomy.

    So fundamental and comprehensive was his research that it soon became the standard of refractive surgery. He practiced and promoted the principles of corneal flattening that could be achieved by incisions made on the anterior surface of the cornea. By varying the number, direction, and shape of the incisions, Dr. Lans could manipulate the effects and tailor the visual correction.

  • Log In Forgot password | Forgot email
  • Membership

    • Join ISRS
    • Renew your Membership
    • Refer ISRS to a Colleague
  • Dates & Deadlines
    There are no scheduled meetings or deadlines.

    Save event

    Select your calendar system below.

    • Google Calendar
    •   Outlook or Apple Calendar
    • Yahoo Calendar

    Note: You will have to be signed in to your calendar and may have to enable pop-ups to add events.

  • FacebookFacebook
  • TwitterTwitter
© ISRS 2015
  • Terms of Service
  • Medical Disclaimer
  • Privacy Policy
  • Find a Refractive Surgeon
  • Contact Us
  • Help