11600 Wilshire Blvd, Suite 200, Los Angeles, CA 90025
(877) 828-2020
HealthFlex
×
  • HOME
  • Services
    • LASIK
      • LASIK Explained
      • LASIK Results
      • Wavelight Technology
      • LASIK FAQ
      • LASIK & Military Service
      • LASIK and Aviation
      • LASIK & Sports
      • LASIK Fees
    • SMILE
      • Introducing SMILE
      • Visumax SMILE Technology
    • PRK
      • PRK Explained
      • Why PRK
    • Cataracts
      • Cataract Symptoms
      • Cataract Surgery
      • Lens Implant Choices
      • Laser Cataract Surgery
      • Presbyopia Treatments
      • Cataract Fees
  • Doctors
    • David Wallace, MD
    • Amir Moarefi, MD
    • Sima Tabanfar, OD
    • Tiffany Tseng, OD
  • Reviews
  • Patient Info
    • Online Registration
    • About LA Sight
    • Hours & Directions
    • Choosing a Surgeon
    • VISION GLOSSARY
  • CONTACT US
  • SCHEDULE

Astigmatism

An optical imperfection due to the cornea or lens of the eye being ‘out of round’ or not uniformly evenly curved. Example: the side of a donut is a ‘toric’ or astigmatic surface as the horizontal curve is different from the vertical curve. The difference between the two curvature radii equals the amount of astigmatism. Astigmatism is corrected by lenses ground in a cylindrical shape (as compared to concave or convex lenses which correct near- and farsightedness, respectively). For that reason, the astigmatism component of an optical lens is sometimes referred to as the ‘cylinder’.

« Back to Glossary Index

Next Steps:

Schedule Your Consultation

or Call (310) 828-2020

More Info:

  • SERVICES
  • DOCTORS
  • REVIEWS
  • PATIENT INFO
  • CONTACT US
  • SCHEDULE

logo

(877) 828-2020

11600 Wilshire Blvd, Ste 200, Los Angeles, CA 90025

Next Steps:

Schedule Your Consultation or Call (877) 828-2020
  • SERVICES
    • LASIK
    • Introducing SMILE
    • PRK
    • Cataracts
  • DOCTORS
    • David Wallace, MD
    • Amir Moarefi, MD
    • Sima Tabanfar, OD
    • Tiffany Tseng, OD
  • REVIEWS
  • PATIENT INFO
    • About LA Sight
    • Hours & Directions
  • CONTACT US
  • SCHEDULE
Copyright ©2021 All Rights Reserved
COVID-19 POLICY | Accessibility Statement