* a) The upper lacrimal punctum is lateral to the lower punctum

* b) The lacrimal canaliculi are lined by stratified squamous epithelium

* c) nasolacrimal duct is narrowest at the lowest end

* d) nasolacrimal duct runs downwards, lateral and forwards to the anterior part of inferior meatus

* e) Congenital blockage is due mainly to delay development of common canaliculus

Answer a. T b. T c. F d. F e. F