Presbyopia

With advancing age, the natural crystalline lens hardens and its ability to change its shape to focus on images in different distances decreases. Farsighted people or those with normal vision can compensate this deficit with reading glasses.

This context is especially important if you are nearsighted. If, for example, you are slightly nearsighted (approximately -2 to -3 diopter), you will always need eye glasses for sharp distant vision. With advancing age, these glasses will also be needed. But, for reading purposes, the glasses can simply be removed and you will be able to read without a corrective device.

Should the existing nearsightedness be surgically corrected, no eye glasses are needed for distant vision. With advanced age, however, presbyopia will appear as it would in any person with normal vision, meaning that reading glasses will become necessary.

After the establishment of wide range of surgical procedures to correct nearsightedness, farsightedness and astigmatism, ophthalmologist are challenged to find similar treatment options for presbyopia. So far, no perfect treatment has been found to replace reading glasses. But there are a few prospects offering advantages which may make them suitable for some patients.

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