Telecanthus is aEUR'
Narrow medial epicanthus
Widely separated medial orbital wall
Lateral epicanthal fold thickened
Increase in intercanthal distance with normal interpupillary distance
Increase in intercanthal distance with normal interpupillary distance Telecanthus is the congenital condition in which there is increased distance b/w the medial canthi or angles of the eyelids. The interpupillary distance (IPD) remains normal. (If a veical line is drawn through lacrimal punctum it will cut cornea as shown in fugure.) The normal distance b/w the medial canthi (the intercanthal distance) is equal to the length of each palpebral fissure mm) Hypeelorism - Occular or orbital hypeelorism is a condition of widely separated eyeballs with increased inter pupillary distance & broad nasal bridge. This condition is often associated with cleidocranial or craniofacial dysostosis & sometimes with mental deficiency. Normal interocular distance D. lacrimal True ocular punctum lar hypeelorism cuts cornea. with secondary telecanthus - veical line through & IPD is increased Primary telecanthus - inner canthi are far apa, although the outer canthi are normally spaced (interpupillary distance is normal). Note veical line through lacrimal punctum cuts cornea. True ocular hypeelorism - Both inner & outer canthi are abnormally far apa Conditions/syndromes associated with telecanthus Prader - Willi syndrome Pena - Shokeir syndrome BBB syndrome Dystopia cantharum Hypeelorism with esophageal abnormality and hypospadias. Opitz syndrome Epicanthus - It is a semilunar fold of skin which covers the medial canthus. It is the most common congenital anomaly of the lids & is a normal facial feature in the Mongolian race.