MENU ABOUT OPTALUX EYE CLINIC EYE SURGERY EYE LASER PRICES EYE KNOWLEDGE NEWS CONTACT ASTIGMATISM (REFRACTIVE ERROR) Tweet Astigmatism is due to unevenly curved cornea or irregularity of lens curvature. Normally, the cornea or lens is curved equally in all directions. There are two main types of astigmatism - regular and irregular. No matter what type of astigmatism you have, your vision becomes blurred and distorted at close range and distance. Astigmatism can occur with other visual defects such as myopia and hyperopia. CAUSES OF ASTIGMATISM A normal spherically shaped cornea like a football evenly curved at all angles refracts light rays correctly on the retina. In an astigmatic condition when the cornea or lens is unevenly curved, light rays of different strengths are refracted in different directions or planes. This results in a distorted image. In most cases, astigmatism is present from birth, but it can occur after an eye injury or as a complication after an eye operation. Astigmatism and refractive errors are used as synonyms in everyday speech. Refractive errors are really all deviations in light-refracting ability. Astigmatism is a visual defect that usually coexists with other refractive errors such as myopia (myopia) or hyperopia (hyperopia) . TWO TYPES OF ASTIGMATISM Astigmatism can be regular or irregular. With regular astigmatism, the cornea is curved more in one direction than the other. The irregular astigmatism is due to irregularities that are not even on the surface of the cornea. The cornea can be curved in different directions. Irregular astigmatism is less common than regular astigmatism. Den oregelbundna astigmatismen kan uppstå av skador som givit ärrbildning på hornhinnan från vissa sorters ögonoperationer vid gradvis förtunning av hornhinnan till följd av ögonsjukdomen Keratokonus. KORRIGERING AV ASTIGMATISM MED GLASÖGON OCH LINSER Regelbunden astigmatism kan korrigeras med glasögon och toriska kontaktlinser. Oregelbunden astigmatism kan korrigeras med stabila kontaktlinser, men inte med glasögon. ÖGONLASER MOT ASTIGMATISM Vi kan behandla din astigmatism med ögonlaser. The degree of astigmatism is indicated in cylinder (Cyl) and the strength in diopters. Axis (Ax) of the cylinder is specified with a value between 0-180 degrees. Adults with nearsightedness (myopia) up to -12 diopters with astigmatism up to -6 and hyperopia (hyperopia) up to +6 diopters with astigmatism up to +5 diopters can be treated with the eye laser methods TransPRK Wavefront Optimized or F-CAT LASEK . DISORDERS CAUSED BY ASTIGMATISM Astigmatism can cause headaches, strained and tired eyes. Book Preliminary Examination for Eye Laser - Free Right Now Do you long to see clearly without glasses and lenses? We find out if an eye laser is feasible after a comprehensive examination of your eyes. BOOK PRELIMINARY EXAMINATION - EYE LASER EYE ANATOMY SYNFEL MYOPIA HYPEROPIA PRESBYOPIA ASTIGMATISM (REFRACTIVE ERROR) EYE DISEASES CATARACT (CATARACT) CATARACT (GLAUCOMA) KERATOCONUS © 2013-2018 Optalux. All rights reserved. VISITING ADDRESS Karlavägen 60 114 49 Stockholm FIND HERE TELEPHONE AND FAX Monday-Friday from 08:00 to 09:00 Tel: 08-66 222 30 Fax: 08-66 221 22 OPENING HOURS Monday-Friday 08: 00-16: 00 Evenings and Saturdays - open some evenings and Saturdays CLOSED FOR LUNCH Every day from 12:00 to 13:00 TO THE TOP OF THE PAGE