ophthalmology

n [U] (medical 医) scientific study of the eye and its diseases 眼科学.

openness, opera, opera-glasses, opera-house, operable, operate, operatic, operatically, operating system, operating-table, operating-theatre, operation, operational, operations room, operative, operator, operetta, ophthalmic, ophthalmic optician, ophthalmologist, ophthalmoscope, opiate, opine, opinion, opinion poll, opinionated, opium, opossum, opp, opponent, opportune, opportunely, opportunism, opportunist, opportunistic, opportunity, oppose, opposed, opposite, opposition,