People with normal eyes can see well for distance as well as near. Presbyopia is the state of our eyes, when it becomes increasingly difficult for us to see things up close when we approach the age of 40 years.
Cause of presbyopia is yet to be understood conclusively as is our limited understanding of how the eye focusses for near.
In order to function with our near vision, the easiest treatment is to start wearing glasses for near vision. The number of these glasses usually starts with +0.5 to +1.0 Diopter and gradually increases as we advance in age. It may go to a maximum of +2.5 to +3.0 Diopter .
Near vision glasses may be worn as and when required or may be worn all the time in the form of Bifocal or progressive glasses , when the distance vision spectacle number is combined with near vision number . This helps avoid putting on and taking off glasses innumerable times during the day.
Use of glasses does allow us to see near without any problem at a very nominal cost but wearing of glasses is not a very convenient proposition and we would definitely like to shed this appendage if given a chance.
Presbyopia Treatment coupled with Cataract Surgery
The closest we are to treating presbyopia is with the use of Foldable Trifocal Intraocular Lenses (Panoptix , Alcon ) or Extended Depth of Focus lenses ( Eyhance , Johnson and Johnson) after cataract surgery which help us achieve freedom from glasses to a great extent.
Being able to treat Presbyopia successfully would be the most exciting time for Ophthalmologists around the world.
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