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.
How to Become an Optometrist. Optometrists diagnose vision problems and prescribe corrective lenses and medications to treat them. They differ from ophthalmologists, who can also perform eye surgeries, and from opticians, who design, fit, and dispense lenses.