4.12: Activity 11

Integrated Human Anatomy and Physiology Lab Manual II: Neural and Cardiopulmonary Systems · LibreTexts

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    Test for Astigmatism

    • Astigmatism is a common eye condition that causes blurry or distorted vision at all distances. It occurs when the cornea (the clear, front surface of the eye) or the lens (inside the eye) has an uneven or irregular curvature.
    • Using the image of lines fanning out from a single point, close the right eye and stare at the image.
    • If any of the lines appear wavy, this indicates a curvature of the cornea called astigmatism. If the lines all appear straight, then no astigmatism is present. Repeat the test with the left eye closed and the right eye open.
      • Left eye: ________
      • Right eye: _______

    This page titled 4.12: Activity 11 was last modified on Fri, 27 Feb 2026 07:45:16 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Lakshmikanta Sengupta and Susmita Sengupta.