The palpebral fissure is the elliptic space between the medial and lateral canthi of the two open eyelids. In simple terms, it is the opening between the eyelids. In adult humans, this measures about 10 mm vertically and 30 mm horizontally.

Palpebral fissures are short when the distance between the medial and lateral canthi is more than 2 SD below the mean for age. A moderate reduction of the palpebral length may be the consequence of excessive curvature of the palpebral rim (“almond-shaped fissures”) and can be found in trisomy 21.

2005年7月15日 · Clinical findings in a newborn with FAS include a characteristic pattern of facial anomalies, 6, 7 with short palpebral fissures, a thin upper lip, and a long, smooth philtrum (Figures 1, 2a...

Palpebral fissure length: distance between the inner and outer canthi of the eye; the actual palpebral fissure encompasses the exposed area between the top and bottom eyelids. The adult palpebral fissure is typically about 3 cm horizontally and 0.8 to 1.1 cm vertically.

palpebral fissure length Outer canthal distance Palpebral fissure length (size of eye) ... Normal Asian descent and some non-Asian infants ... Up-slanting palpebral fissures Short, flat nasal bridge

Short Palpebral Fissure Lengths Distance from A to B is 2 or more standard deviations below the mean. Smooth Philtrum The vertical groove between the nose and upper lip is a Rank 4 or 5 on the Lip-Philtrum Guide. Click here to view additional instructional photos on how to identify a Rank 4 or Rank 5 philtrum. Thin Upper Lip Red portion of ...

Short (left); normal (middle); large (right) This varies greatly with ethnic origin. Up (left); normal (middle); down (right) Many variations exist. The boy on the left does not have folds. On the right image, the effect of the epicanthal fold extending above the inner canthus is illustrated.

Palpebral fissures are generally shortened and may slant up or down. Cataracts of unknown morphology have been reported and strabismus is common. The systemic phenotype is highly variable. Skull and facial anomalies are common with brachycephaly, bitemporal narrowing, and a broad low nasal bridge.

To measure the palpebral fissure length (PFL) the User clicks the mouse on the endocanthion and exocanthion landmarks of the eye. The Software computes the PFL in mm and reports how many standard deviations above or below the mean it is by looking it up on PFL normal growth chart.

2025年1月22日 · The palpebral fissure refers to the elliptical opening between the upper and lower eyelids. It is the visible space of the eye that you see when the eyes are open. The shape and size of the palpebral fissure can vary between individuals due to genetic, developmental, or medical factors.