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Various eye care professionals, including ophthalmologists, optometrists, and opticians, are involved in the treatment and management of ocular and vision disorders. A Snellen chart is one type of eye chart used to measure visual acuity. At the conclusion of an eye examination, an eye doctor may provide the patient with an eyeglass prescription for corrective lenses. Some disorders of the eyes for which corrective lenses are prescribed include myopia (near-sightedness) which affects one-third of the population, hyperopia (far-sightedness) which affects one quarter of the population, and presbyopia, a loss of focusing range due to aging.
Eye care professionals
The human eye is delicate as such for any eye care need that an individual may have, it is important that only eye care professional are consulted. The professionals have different function in different countries and continents. Basically, every eye care professional knows the purpose and rules of their training so in cases when the wrong eye care need is presented to them they rightly and promptly refer to the professional in the eye care team legally mandated to handle that situation. They include: