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The lateral canthus is the outer corner where the upper and lower eyelids meet near the temple. Ligaments and connective tissues anchor the lids at this point. The area helps maintain proper eyelid alignment and contour. Its firm support contributes to smooth blinking and protection.
read more about lateral canthus ...It lies at the outer edge of the palpebral fissure, opposite the inner corner near the nose. A fibrous lateral canthal tendon stabilizes the eyelid margins here. Skin and muscle layers blend into the surrounding face. The location sets the boundary for lid motion.
The lateral canthus forms where the upper and lower eyelids meet near the temporal side of the orbit. The underlying tendon attaches firmly to Whitnall's tubercle on the zygomatic bone. Surrounding tissues include orbicularis oculi fibers and connective fascia. This configuration preserves lid alignment and facial contour.
The lateral canthus is the outer corner where the upper and lower eyelids meet. It stabilizes the eyelids and supports proper blinking, which helps spread tears evenly across the eye's surface. This coordination keeps the cornea lubricated and protected for clear vision.
Understanding the anatomy of the eye helps explain how vision works and why each part is important for healthy sight. From the cornea that focuses light to the retina that captures images, every structure plays a precise role. Learning about these components encourages better eye care and awareness of changes that could signal a problem.
By anchoring the lid margins, it keeps the edges aligned against the eye's surface. This alignment allows tears to spread evenly during blinks. Stable corners reduce friction and exposure. The result is comfortable, efficient protection for the ocular surface.
Eyelid skin, the orbicularis oculi muscle, and fibrous tendons converge at this corner. Small vessels and nerves traverse the region to supply local tissues. The arrangement supports both motion and sensation. Together these parts maintain lid position and tone.
Proper canthal support prevents gapping that could dry the surface. It also guides tear flow toward the lid margins rather than the cheek. Good alignment makes blinking feel natural and smooth. This corner quietly contributes to daily visual comfort.
Is there also a medial canthus? Yes, it is the inner corner near the nose.
Does the canthus move? It remains relatively fixed while the lids glide.
Is it visible? Yes, it is the outer eye corner you can see in the mirror.
Agrawal, S. (2025). Eyelid reconstruction. EyeWiki (American Academy of Ophthalmology). https://eyewiki.org/Eyelid_Reconstruction
EyeWiki. (2025). Lateral canthal tendon cantholysis. EyeWiki (American Academy of Ophthalmology). https://eyewiki.org/Lateral_Canthal_Tendon_Cantholysis
Cochran, M. L., Lopez, M. J., & Czyz, C. N. (2023). Anatomy, head and neck: Eyelid. StatPearls. NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK482304/
Rehman, I., Hazhirkarzar, B., & Patel, B. C. (2023). Anatomy, head and neck, eye. StatPearls. NCBI Bookshelf. https://www.ncbi.nlm.nih.gov/books/NBK482428/
Cleveland Clinic. (2024). Eyelids: Types, anatomy, function & common conditions. Cleveland Clinic. https://my.clevelandclinic.org/health/body/eyelids