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.
The first step toward becoming a surgeon is to earn a bachelor's degree. Although there is no specific mandated major, it's highly suggested you consider a major in the sciences, such as biology or chemistry. You must pass the Medical College Admission Test (MCAT) to apply to medical school.
To become a brain surgeon you need to take the following steps: 1.) Graduate from high school and apply and get accepted to a university. 2.) At a 4 year university you will work towards a bachelors degree in pre-medicine or pre-health with at least a GPA of 3.5 or better.