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A nearsighted person cannot see objects clearly beyond 70 cm (the far point) .If the patient has no astigmatism and contact lenses are prescribed,what is the power of the lens required to correct the patient's vision?
Food
Nutrient-rich substances consumed by organisms for energy, growth, and maintenance of life functions.
Fluorine
A highly reactive, pale yellow gas at room temperature, the most electronegative and reactive of all the elements, used in various industrial and chemical applications.
Bone and Tooth Formation
The physiological process through which new bone and tooth material is generated and structured.
Vitamin B12
An essential vitamin important for the normal functioning of the brain and nervous system, and for the formation of blood.
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