The cost of goods sold (COGS) is the allocated overhead involved in producing or acquiring goods that you sell. COGS is sometimes referred to as the cost of sales or cost of services. Included in this amount is the cost of the items utilized plus the direct labor costs to produce each of those items.
An ophthalmologist is a medical doctor who is specialized in eye and vision care. In order to become an ophthalmologist, acquisition of an M.D. or a D.O. (doctor of osteopathy) degree is necessary following the completion of college.
Optometrists (also known as Doctors of Optometry in the US and Canada for those holding the O.D. degree[1] or Ophthalmic Opticians in the UK[2][3][4][5][6][7]) are medical professionals who provide primary eyecare through comprehensive eye examinations to detect and treat various visual abnormalities and eye diseases.