palpebral fissure


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
Related to palpebral fissure: clinodactyly, Epicanthal folds

fissure

 [fish´er]
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.

pal·pe·bral fis·sure

[TA]
the fissure between the eyelids leading into the conjunctival sac.
Synonym(s): rima palpebrarum [TA]

palpebral fissure

[pal′pəbrəl]
Etymology: L, palpebra, eyelid, fissura, cleft
the opening between the margins of the upper and lower eyelids.

palpebral fissure

 The horizontal slit-like opening for the eyes between the eyelids

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.

Palpebral fissure

Eyelid opening.
Mentioned in: Tarsorrhaphy

fissure

1. a narrow slit or cleft, especially one of the deeper or more constant furrows separating the gyri of the brain.
2. in dermatology a deep crack in the skin, often through a scab, which penetrates into the subcutis.

abdominal fissure
a congenital cleft in the abdominal wall.
anal fissure, fissure in ano
a painful linear ulcer at the margin of the anus.
fissure of Bichat
transverse fissure (2).
branchial fissure
branchial cleft.
central fissure
fissure of Rolando.
collateral fissure
a longitudinal fissure on the ventral surface of the cerebral hemisphere between the fusiform gyrus and the hippocampal gyrus.
dorsal median fissure
1. a shallow vertical groove in the closed part of the medulla oblongata, continuous with the dorsal median sulcus of the spinal cord.
2. a shallow vertical groove dividing the spinal cord throughout its whole length in the midline dorsally. Called also dorsal median sulcus.
ear fissure
a split in the margin of the pinna which can gradually become larger from continued trauma.
hippocampal fissure
one extending from the splenium of the corpus callosum almost to the tip of the temporal lobe; called also hippocampal sulcus.
interhemispheric fissure
the fissure between the two cerebral hemispheres in birds.
interincisive fissure
fissure between the two incisive bones at the rostral end of the pig's face.
laryngeal fissure
the dorsal laryngeal furrow.
ligamentum teres fissure
on the diaphragmatic surface of the liver; houses the ligamentum teres.
fissure lines
in radiology, the variation in radiodensity indicating the division between lobes of the lung.
longitudinal fissure
the deep fissure between the cerebral hemispheres.
macropalpebral fissure
an enlarged palpebral fissure.
optic fissure
a ventral fissure in the developing optic cup through which blood vessels pass to the enclosed mesenchyme.
orbital fissure
see orbital foramen.
palatine fissure
a pair of fissures perforating the rostral extremity of the palate.
palpebral fissure
the opening between the eyelids.
perianal fissure
see perianal fistula.
petrotympanic fissure
the chorda tympani, on its way to merge with the lingual branch of the mandibular nerve, passes across the tympanic cavity and emerges at the petrotympanic fissure.
portal fissure
porta hepatis.
presylvian fissure
the ventral branch of the fissure of Sylvius.
reverse fissure
mediastinal fluid dissects into fissures between lung lobes causing fissure lines on radiographs to appear wide centrally and narrower peripherally.
Rolando's fissure, fissure of Rolando
a groove running obliquely across the superolateral surface of the cerebral hemisphere, separating the frontal from the parietal lobe. Called also central fissure and central sulcus.
round ligament fissure
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 dorsally between the temporal and parietal lobes of the brain.
transverse fissure
1. porta hepatis.
2. the transverse cerebral fissure between the diencephalon and the cerebral hemispheres; called also fissure of Bichat.
tympano-occipital fissure
on the ventral surface of the skull, near the confluence of the osseous bulla and the occipital bone, this pair of fissures serve as conduits for the glossopharyngeal, vagal and accessory nerves in species without a jugular foramen.
ventral median fissure
a longitudinal furrow along the midline of the ventral surface of the spinal cord and medulla oblongata.
zygal fissure
a cerebral fissure consisting of two branches connected by a stem.

palpebral

pertaining to the eyelid.

palpebral conjunctiva
conjunctiva at the back of the eyelid.
palpebral fissure
see palpebral fissure.
medial palpebral ligament
the ligament which connects the medial ends of the tarsi to the orbit.
palpebral nerve
a branch of the auriculopalpebral nerve which serves the muscles of the eyelid (see Table 14).
palpebral reflex
the eyelids close when the eyelids are touched.
References in periodicals archive ?
Palpebral fissure width: In our study, the male had longer palpebral fissure than the female subjects and they showed statistically significant sexual differences (males: 31.
The right palpebral fissure was longer than the left as were the right external nares compared to the left.
Ocular examination revealed a moderately narrowed palpebral fissure on the left side (Fig 1).
Congenital deficiency of abduction, associated with impairment of abduction, retraction movements, contraction of the palpebral fissure and oblique movements of the eye.
She had a marked dysmorphic face with short palpebral fissures, retrognatia, angular nose and small ears (Figure 3a, b).
A note was made on every visit at 1, 3 and 6 months regarding the amount of palpebral fissure height obtained and the other associated complications as given above.
He had upslanted palpebral fissures, depressed nasal bridge, long philtrum, incomplete cleft lip and micrognathia.
Other signs include low-set slightly malformed ears, deeply-set malformed eyes, small palpebral fissures, micrognathia, developmental delay and unilateral optic hypoplasia (figure 1a and 1b).
This phenotype comprises down slanting palpebral fissures, flattening of the malar bones, relative lengthening of the face and a persistently open mouth.
1) with small hands and feet, a narrow nasal bridge, and almond-shaped palpebral fissures.
Their facial features are coarse, with hypertelorism, downslanted palpebral fissures and a broad nasal bridge.