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A 43-year-old member asked:

How do doctors know what prescription is needed for baby eyeglasses, if babies can't read an eye chart?

1 doctor answer1 doctor weighed in
Dr. Andrew Shatz
Ophthalmology 26 years experience
Refraction: Refraction is the measurement of how much the eye bends light. Refraction can be performed subjecively - the doctor shows the patient an image through progressively stronger lenses until the patient sees clearly - or objectively, by measuring how reflected light from the eye is bent and using lenses to "straighten" the bend without the patient giving his/her input. This method is used for children.

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Last updated Jul 5, 2012

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