i think an optometrist? not sure.
an eye doctor
someone who studies flags is called a vexillologist
someone who studies languages is usually known as a linguist.
someone who studies insects is an entomologist and one who studies spiders is an arachnologist
you call a person who studies butterflies and moths lepidopterist
a person who studies planets is a planetologist.
a scientist is someone who studies science.
someone who studies sound and it's properties is a audiologist
there is no special name for someone who studies hebrew.
a person who studies reptiles is called a herpetologist.
a person who studies seismology is called a seismologist.
a person who studies geography is called a geographer.
i would call him an art student.
an entemologist is a person who studies insects.a myrmecologists is a person who studies ants.
its called an anatomist
normally .you call one .a letterologist.
you call it chemist i think
a latin or classics student.
ephemeralist , ephemerologist ,
an astronomer, (i.e. not an astrologer!)
they would be called a dermatologist.
the study of birds is called ornithology. therefore someone, usually a scientist, who studies birds is referred to as an ornithologist.