ophthalmologist vs oculist

ophthalmologist and oculist both are nouns.

Word	Noun	Adjective	Verb	Adverb
ophthalmologist	Yes	No	No	No
oculist	Yes	No	No	No

As nouns, ophthalmologist and oculist are synonyms defined as:

ophthalmologist and oculist: a medical doctor specializing in the diagnosis and treatment of diseases of the eye

Other synonyms of ophthalmologist include eye doctor.

ophthalmologist (noun)	oculist (noun)
a medical doctor specializing in the diagnosis and treatment of diseases of the eye	a medical doctor specializing in the diagnosis and treatment of diseases of the eye
	a person skilled in testing for defects of vision in order to prescribe corrective glasses