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Eye glass Precription
My Uncle has an eye glass prescription which contains for one of the yes as follows:
+0.75 in spherical power column
+0.5 in cylindrical power column
+2.5 in ADD power column.
My question is generally sph and cyl columns contain minus values for nearsightedness correction.
Here, we see plus value which means farsightedness (reading). If so, why not mention it in ADD power itself which is specifically for farsightedness (reading)? The optometrist said +0.75 and +0.5 powers are for distant seeing. Got confused. Pl clarify. thanks
Answers (1)
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Dr. Venkat Raghav
General Physician
7 yrs exp
Bangalore
Hello... Don't get confused, its simple, there are two problems with visual acuity, in lamen language difficulty to see distant objects(nearsightheadness) and difficulty to see near objects... (Farsightedness ). In farsightedness they use convex lense so power is plus, in near sightheadness they use concave lens so negative power. .
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Disclaimer : The content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding your medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.