by 
Sophie
ANSWERS: 2
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http://www.patentstorm.us/patents/5838419/description.html Red-biased light from artificial sources causes images to be focused further back in the eye than images formed under natural lighting. In response, the retina induces the eye to elongate. The interior lens adjusts and can send the image even further back. The retina then chases an image which is not well-focused. Chromatic aberration and incomplete compensation by the eye, therefore, exacerbates the problem as longer red colors are brought to a focus behind shorter blue colors. Indeed the above-referenced animal experiments further corroborate that the eye elongates as a response to light that is not well focused (the diffusion experiments) and to light that is red (the closed lid animal models).
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In summary, red colours induces/increases myopia(shorsightedness).
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