Which of the following is treatment for chronic dacrocystitis?

Ans. a (Dacrocystorhinostomy). (Ref. and Parson's 19th/501, Basak, Ophthalmology, 2nd ed., 282, 336)Dacrocystorhinostomy (DCR): It is surgical procedure of choice in chronic dacrocystitis, in which a communication is made between lacrimal sac and middle meatus of nose.Contraindications:# DNS# Atrophic rhinitis# Carcinoma of lacrimal gland