It includes the prevention, diagnosis and treatment of diseases of internal organs

• upper and lower respiratory tract
• digestive tract
• genitourinary tract
• skin, skin derivatives and ears
• diseases of the haemolymphatic system
• hormonal system
• ophthalmology – diseases of the eyelids, conjunctival sac, third eyelid, cornea, lacrimal apparatus, examination of hereditary diseases of the eye by molecular genetic methods
• infectious diseases
• immune-mediated diseases