Merck Manual

Please confirm that you are not located inside the Russian Federation

Yes No
Leave this Site?

The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.

Continue Cancel
honeypot link
Merck Manual
Consumer Version
The trusted provider of medical information since 1899
VIEW PROFESSIONAL VERSION
VIEW PROFESSIONAL VERSION

Enter search terms to find related medical topics, multimedia and more.

Advanced Search:

• Use “ “ for phrases
o [ “pediatric abdominal pain” ]
• Use – to remove results with certain terms
o [ “abdominal pain” –pediatric ]
• Use OR to account for alternate terms
o [teenager OR adolescent ]

Health Topics & Chapters
Entropion
m1550112-entropion-science-photo-library-high
Entropion

    Entropion is when the eyelid turns inward. It most commonly affects older adults. The lower eyelid margin is rolled in and the lashes are not visible.

SCIENCE PHOTO LIBRARY

In these topics
Quick Facts: Entropion and Ectropion Entropion and Ectropion

Brought to you by Merck & Co, Inc., Rahway, NJ, USA (known as MSD outside the US and Canada)—dedicated to using leading-edge science to save and improve lives around the world. Learn more about the Merck Manuals and our commitment to Global Medical Knowledge.


This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
This icon serves as a link to download the eSSENTIAL Accessibility assistive technology app for individuals with physical disabilities. It is featured as part of our commitment to diversity and inclusion. M
Copyright © 2023 Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.