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Power Prescription

His doctor is prescribing a minus 4 power after obtaining a computer assisted power of -4.25. He justifies that the computer always shows 0.25 more. But, my friend feels comfortable with minus 4.5 power. Which one should I suggest him to go through and why the doc prescribes him under powered glasses?
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Doctor Answers (2) on Power Prescription

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Dr. Vaibhev Mittal Sangrur | Ophthalmologist/ Eye Surgeon
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Hello 1. computer does not show exact power. 2. Computer just gives rough estimation which is confirmed by subjective refraction done by doctor 3. iI would recommend you to use glasses prescription as recommended by your doctor
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Venkat Raghav Bangalore | General Physician
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Hello... That's is common ... Doctor always prescribed under powered spectacles that's called undercorrection... There is no problem in wearing undercorrected glasses but you cannot wear over corrected glasses.... Go with opthamologist advice, see if you are comfortable with those spectacles..
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