Correct Answer - B
Ans. is 'b' i.e., Connecting the lacrimal sac to nose by breaking the
medial wall
Dacryocystorhinostomy is the surgical procedure which involves
removal of bone adjacent to lacrimal sac (medialwall) and
incorporating the lacrimal sac with lateral nasal mucosa (at middle
meatus) in order to bypass the obstruction in nasolacrimal duct.
Advantage of dacryocystorhinostomy over dacryocystectomy is that
there is no epiphora or watering of eyes posteoperatively.
Indications of dacryocystorhinostomy are :-
1. Congenital or acquired nasolacrimal duct obstruction.
2. Functional obstruction to lacrimal outflow (e.g. lacrimal pump
weakness) or facial nerve palsy.
3. History of dacryocystitis
Dacryocystorhinostomy can be done either open (external) approach
or endonasal (endoscopic) approach.

Correct Answer - D
Ans. is 'd' i.e., Watering of mouth
Apraclonidine
Topical application lowers the intra ocular pressure by 25 %.
It decreases aqueous production by primary alphal and subsidiary
alpha 2 action in ciliary body.
Itching, lid dermatitis, follicular conjunctivitis, mydriasis, eyelid
retraction, dryness of mouth and nose are common side effects.
Its use is restricted to short term control of spikes of intraocular
tension after laser trabeculolasty or iridotomy.