Double eyelids are often preferred for both aesthetic and functional reasons. The primary mechanism behind a double eyelid involves the skin of the eyelid being connected to the tissue that opens the eye.
Here's a breakdown:
The Structure of Double Eyelids
- Connection: In a double eyelid, the skin is attached to the levator muscle (the muscle that raises the eyelid).
- Crease: This connection creates a visible crease when the eye is opened, resulting in the appearance of a double eyelid.
Reasons for Preference:
The preference for double eyelids can be attributed to both aesthetics and functional advantages.
Aesthetic Reasons:
- Appearance of Larger Eyes: The crease can make eyes look larger and more open.
- Enhanced Eye Shape: The eyelid crease can provide a more defined and attractive eye shape.
- Cultural Beauty Standards: In many cultures, double eyelids are seen as a desirable and beautiful feature.
Functional Reasons:
- Improved Field of Vision: Some suggest that a double eyelid may offer a slightly better field of vision, although this benefit is subtle.
- Easier Eyelid Movement: The connection between skin and muscle might facilitate more natural and easier eyelid movements.
Double Eyelid Surgery:
- Mechanism: The principle behind double eyelid surgery is to create or reinforce the connection between the eyelid skin and the levator muscle.
- Goal: This procedure recreates the structure of a natural double eyelid.
- As the reference states, "Since the mechanism of double eyelid is bonding the eyelid skin to the eye-opening tissue, the principle of double eyelid surgery is also connecting the eyelid skin to levator component."
Summary
In conclusion, the preference for double eyelids often stems from both their cosmetic appeal and potentially slight functional advantages. The presence of a crease due to the connection between eyelid skin and the levator muscle is key. Double eyelid surgery is designed to replicate this connection for those who wish to have this feature.
