The table below lists fully habitable buildings, not observation towers. For statistics on CN Tower and other very tall structures, see our directory of TV, Radio & Observation Towers.
A detailed examination of the eye can reveal conditions such as high blood pressure or diabetes. Optometrists make a health assessment, offer clinical advice and when necessary prescribe spectacles or contact lenses. In addition, optometrists can dispense, fit and supply spectacles or contact lenses. They also supervise trainee optometrists and dispensing opticians, and medical students.
An optometrist may perform an eye exam and write a prescription for corrective lenses, while an optician may fill that prescription. An ophthalmologist is a medical doctor who specializes in all aspects of eye care including diagnosis, management, and surgery of ocular diseases and disorders.