Asian Eyelid Surgery Resource

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Since the shape and height of the upper eyelid crease are typically the most pressing concerns in most patients seeking Asian eye surgery, or double eyelid surgery, it is helpful to communicate preferences in readily understandable terms. Unfortunately, terminology used to describe Asian and Occidental upper eyelid creases is confusing. The most commonly encountered designations are noted below.

Single Eyelid	Parallel Crease
Tapered Crease	Lateral Flare

Single eyelid - An upper eyelid with no visible crease

Double eyelid - An upper eyelid divided into a top and bottom portion by a visible crease; inborn or after surgery

Parallel crease - A crease that runs parallel to the eyelid edge along its full extent

Tapered crease - A crease that courses lower as it approaches the nasal (inner) side

Lateral flare - A gently upward flare as the crease approaches the temporal (outer) side

Inside fold - Same as a "tapered crease"

Inner double eyelid - Same as a "tapered crease"

Outer double eyelid - Same as a "parallel crease"

Pseudo-single eyelid - A crease, though present, is obscured by overhanging skin

Semilunar crease

Semilunar crease - A crease that arches higher over the eye while coursing lower at both the nasal (inner) and temporal (outer) corners. A more typical Occidental feature.

A crease may be further described as continuous, discontinuous, partial or incomplete, multiple, doubled, deep, shallow, asymmetric, one-sided, high, and/or low. • Even within the Asian population, the incidence of natural crease formation varies. For instance, while approximately half of those of Chinese descent show at least some natural crease formation, only about one-third of those of Korean ancestry demonstrate this finding. • The typical Asian crease is far different from the typical Occidental crease in terms of shape, height, and continuity. To speak of them both as one and the same is a gross over-simplification. • It is not uncommon for half the siblings in a given Asian family to possess a defined double eyelid while the other half show little or no crease. • It is common for natural creases to vary in terms of shape, height, or even presence between the two eyes of a single individual. About 10% of Asian people show a . . .

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• An anatomical explanation for why some lids have creases and some lids don't

• Preoperative considerations regarding creation of an eyelid crease