A Ophthalmo logist is a physican that treats diseases and disorders of the eye. Urology is the study of the urine or urinary tract. A Uro logist is a specialist in urology. Cardiology is the study of the heart. A physcian treating disorders of the heart is a Cardio logist.
Dermatology refers to the science of the skin.
A Dermatol ogist is a physician that treats skin disorders such as skin cancer or acne. Radiology is the medical science that uses x-rays to take images of bones and internal body structures. A radio logist is a specialist that uses x-rays in the diagnosis of broken bones or internal organ abnormalities. Endocrinology is study of the endocrine glands which produce hormones. A physican that specilizes in treating hormonal disorders is call a Endo crino logist.