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Palpebral slant
Palpebral slant


The palpebral slant is the direction of the slant of a line drawn from the outer corner of the eye to the inner corner.

Alternative Names:

Mongolian slant


The palpebra are the upper and lower eyelids which, viewed together, make up the shape of the eye. A line drawn from the inner corner to the outer corner determines the slant of the eye, or palpebral slant. Slanting and a fold of skin (epicanthal fold ) are normal in people of Asian descent.

Abnormal slanting of the eye may be associated with some genetic disorders and syndromes. The most common syndrome associated with an abnormal palpebral slant is Down syndrome . Persons with Down syndrome often also have an epicanthal fold in the inner corner of the eye.

Common Causes:

Palpebral slant may not be associated with any other defect. However, in some cases, it may be due to:

Home Care:

There is no special care for palpebral slant. Instead, you should treat the condition that is causing palpebral slant.

Call your health care provider if:

Contact your health care provider if:

  • Your infant has abnormal facial features
  • You are concerned about your infant's ability to move his or her eyes
  • You notice any abnormal color, swelling, or discharge from the eyes

What to expect at your health care provider's office:

Your health care provider will perform a physical exam and asked questions about the person's medical history and symptoms.

An infant with an abnormal palpebral slant generally has other symptoms and signs of a specific condition. Diagnosis of that condition will be based on a family history, medical history, and a thorough physical exam.

Laboratory studies such as chromosome studies , enzyme assays, x-rays , and metabolic studies may be ordered to confirm a suspected disorder.

Review Date: 5/12/2009
Reviewed By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100