What is the cause of presbyopia (loss of near vision over the age of 40)?
The exact cause of presbyopia continues to be debated. Some think it has to do with an increasing rigidity of the proteins and fibers in the natural lens of the eye that gradually increases with age naturally. Some feel it has something to do with changes in the internal eye muscles and spatial changes of the internal eye structures. Regardless, it is an inevitable vision change that all humans will experience. While there is not an ideal form of treatment, much interest and research continues.
