palpebral fissure

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1. a narrow slit or cleft, especially one of the deeper or more constant furrows separating the gyri of the brain.
2. a deep cleft in the surface of a tooth, usually due to imperfect fusion of the enamel of the adjoining dental lobes. It can be treated with a dental sealant to decrease risk of caries.
abdominal fissure a congenital cleft in the abdominal wall; see also gastroschisis and thoracoceloschisis. Called also celoschisis.
anal fissure (fissure in ano) a painful lineal ulcer at the margin of the anus.
anterior median fissure a longitudinal furrow along the midline of the ventral surface of the spinal cord and medulla oblongata.
fissure of Bichat transverse fissure (def. 2).
branchial fissure pharyngeal groove.
central fissure fissure of Rolando.
collateral fissure a longitudinal fissure on the inferior surface of the cerebral hemisphere between the fusiform gyrus and the hippocampal gyrus.
Henle's f's spaces filled with connective tissue between the muscular fibers of the heart.
hippocampal fissure one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus.
longitudinal fissure the deep fissure between the two cerebral hemispheres.
palpebral fissure the longitudinal opening between the eyelids.
portal fissure porta hepatis.
posterior median fissure
1. a shallow vertical groove in the closed part of the medulla oblongata, continuous with the posterior median fissure of the spinal cord.
2. a shallow vertical groove dividing the spinal cord throughout its length in the midline posteriorly; called also posterior median sulcus.
presylvian fissure the anterior branch of the fissure of Sylvius.
pudendal fissure rima pudendi.
Rolando's fissure (fissure of Rolando) a groove running obliquely across the superolateral surface of a cerebral hemisphere, separating the frontal lobe from the parietal lobe. Called also central fissure and central sulcus.
fissure of round ligament one on the visceral surface of the liver, lodging the round ligament in the adult.
sylvian fissure (fissure of Sylvius) one extending laterally between the temporal and frontal lobes, and turning posteriorly between the temporal and parietal lobes.
transverse fissure
2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres; called also fissure of Bichat.
zygal fissure any of the fissures on the cerebral cortex that consist of two branches connected by a stem.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pal·pe·bral fis·sure

the fissure between the eyelids leading into the conjunctival sac.
Synonym(s): rima palpebrarum [TA]
Farlex Partner Medical Dictionary © Farlex 2012

palpebral fissure

 The horizontal slit-like opening for the eyes between the eyelids
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ri·ma pal·pe·bra·rum

(rī'mă pal'pē-brā'rŭm) [TA]
The lid slit, or fissure between the lids of the eye.
Synonym(s): palpebral fissure.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Palpebral fissure

Eyelid opening.
Mentioned in: Tarsorrhaphy
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The features of Treacher Collins syndrome along with correlation with the present case Clinical features of TCS For the Our Case Absent (-)/Present(+) Hypoplasia of the zygomatic bones + Hypoplasia of the mandible + Microtia + Conductive hearing loss + External auditory canal atresia/stenosis + Hypoplasia of middle ear ossicles + Cleft palate with or without cleft lip - Preauricular hair displacement - Antimongoloid slant of palpebral fissures + Lower eyelid abnormalities Coloboma - Sparse or absent eyelashes + Ophtalmologic defects - TCS: Treacher Collins Syndrome
The most prominent features of WDSTS that can serve as diagnostic criteria are generalized hypertrichosis, postnatal growth retardation, psychomotor development delay and distinct facial phenotype (thick hair and eyebrows, hypertelorism, downslanted palpebral fissures, and long eyelashes).
During the physical examination, we observed facial asymmetry, the presence of bilateral ear pits, hooded eyelids, myopia, micrognathia and upward slanting of palpebral fissures (Fig.
Caption: Figure 1: An 8-year-old patient with small hypertelorism, mild ptosis, downslanting palpebral fissures, low-set and posteriorly angulated ears, high arched palate, short neck, and pectus excavatum.
Notable dysmorphic features included transverse palmar crease, macroglossia, a flat nasal bridge, low set ears, increased skin over back of neck, a short neck, and upslanting palpebral fissures. Chromosomal analysis confirmed diagnosis of DS with 47XY + 21 karyotype.
Facial characteristics involved dolichocephaly, maxillary retrognathia, broad forehead, downward slanting palpebral fissures, prominent chin and convex profile.
The three typical facial changes that have been used to make this diagnosis since the 1970s include short palpebral fissures, a shallow or lack of philtrum, and a thin vermilion border of the upper lip.
closed palpebral fissure of both eyes) in 2 chick (p=0.2), 1 chick showed multiple deformities including gastroschisis, closed palpebral fissures and inverted foot (p=0.45).
Typical physical signs of FASD include short palpebral fissures, a smooth philtrum, and a vermilion border of the upper lip that may be thinner than normal, along with midface hypoplasia.
He had upslanted palpebral fissures, depressed nasal bridge, long philtrum, incomplete cleft lip and micrognathia.
(1) Previous reports demonstrated ocular manifestations of trisomy 9 patients as deeply-set eyes, small palpebral fissures, telecanthus, keratolenticular adhesion and marked iris hypoplasia.
This phenotype comprises down slanting palpebral fissures, flattening of the malar bones, relative lengthening of the face and a persistently open mouth.