what is meant by bifocal?
it is a branch like science,arts after 10th
198 Views|Posted 2011-05-18 14:38:19
Asked by Aditya
1 Answer
Answered by
2011-05-18 14:57:38
it means both the lens convex & concav... it is mostly used by old agee peopll..... thy wear both lenss...
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