Ophthalmologist If it involves your eyes, your ophthalmologist is the doctor you’ll see. You might visit them often enough to learn how to spell that word without Googling. Other Terms Nervous System Co-ordinates all your actions, both voluntary and involuntary. Neurodegenerative Disease Conditions characterized by progressive nervous system dysfunction. Neurologist Clever scientists specializing in the nervous system. Neuron Clever scientists specializing in the nervous system. View More