oculist vs ophthalmologist

oculist and ophthalmologist both are nouns.

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

As nouns, oculist and ophthalmologist are synonyms defined as:

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

Other synonyms of oculist include eye doctor.

oculist (noun)	ophthalmologist (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