###Rationale: Ans. is 'd' i.e., Betaxolol o Among the given options, only betaxolol is 0-1 selective.

###Answer: OPTION D IS CORRECT.
###Question: Glaucoma drug which is b-1 selectve p-blocker is ?
###Options:
A. Timolol
B. Laevobuno I ol
C. Caeolol
D. Betaxolol
