There is no significant difference in nasolacrimal duct diameter among ethnic groups, which may predispose one to nasolacrimal duct obstruction. But, this is significantly associated with inter-frontozygomatic suture distance, suggesting that a wider face is associated with wider nasolacrimal duct diameter. An acute frontonasal angle predicts a thicker anterior lacrimal crest for surgical preparation during dacryocystorhinostomy.
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