Ophthalmology Question:
With regard to the lacrimal drainage system:
Answer:
* 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
* 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
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