http://en.wikipedia.org/wiki/Human_eye
The human eye contains enough complexity to warrant specialized attention and care beyond the duties of a general practitioner. These specialists, or eye care professionals, serve different functions in different countries. Each eye care professional can typically be categorized into one or a multiplicity (i.e. an ophthalmologist can perform surgery; and in some instances prescribe lenses, which is a duty often performed by optometrists) of duties of the following types of professionals:
Ophthalmology
Optometry
Orthoptics
Opticians
The human eye contains enough complexity to warrant specialized attention and care beyond the duties of a general practitioner. These specialists, or eye care professionals, serve different functions in different countries. Each eye care professional can typically be categorized into one or a multiplicity (i.e. an ophthalmologist can perform surgery; and in some instances prescribe lenses, which is a duty often performed by optometrists) of duties of the following types of professionals:
Ophthalmology
Optometry
Orthoptics
Opticians
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