antimongoloid slant

A downward slant of the eyelid in the horizontal plane that is opposite that of individuals with trisomy 21—‘mongolism’; the finding is non-specific and may be seen in various congenital syndromes—e.g., Treacher-Collins syndrome and Franceschetti (oculomandibulofacial) syndrome—and is accompanied by a bird-like facies

antimongoloid slant

Antimongolic fissure Pediatrics A downward slant of the eyelid in the horizontal plane that is opposite that of individuals with trisomy 21–'mongolism'; the finding is nonspecific and may be seen in various congenital syndromes–eg, Treacher-Collins syndrome and Franceschetti–oculomandibulofacial syndrome, and is accompanied by a bird-like facies.

antimongoloid slant 

A condition in which the nasal corners of the palpebral fissure are higher than the temporal corners, as opposed to the typical mongoloid slant. This occurs when the lateral palpebral ligament is inserted lower than the medial palpebral ligament. It is a feature of the Treacher Collins syndrome.
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
Antimongoloid slant may be seen in Down, Turner, trisomy 17-18, Apert, Smith Lemli Opitz, Noonan and Treacher Collins syndromes.
This early fusion preventing skull growth also shows facial dysmorphism including a long narrow head, Hypertelorism, bilateral Exophthalmos, antimongoloid slant of a palpebral fissure, a high arched palate, severe mandibular hypoplasia and narrow maxilla, low set ears.