^{Correction of Presbyopia} 

^{The most important thing about glasses is where you left them last!}

^{Spectacles -} 

^{A different set of glasses for reading and near work.}

^{Bifocal glasses-}

^{the upper part of the spectacle is for distance correction, the lower part is for near correction.}

^{They are available in various designs-D-bifocal, big near segment bifocal, small segment type.}

^{Trifocal glasses -}

^{One segment is for distant vision, middle part for intermediate vision, lower for near vision.}

^{They are difficult to get used to.}

^{Transition glasses -}

^{The power in them varies gradually, from distance to near.}

^{They have no distinct segment, for reading and hides the aging factor skillfully.}

^{They are costlier, difficult to get used to. Glare may occur.}

^{Contact lenses}

^{Monocular lens -Contact lens is used in one eye only. It gives the focus for reading. The other eye is used for distance vision.}

^{Bifocal contact lenses have become available.}