You may have heard of "second sight" in which the vision can become less glasses dependant. This occurs if someone is slightly farsighted, and with age and cataract development, which can reduce farsightedness, and they become less glasses dependent for distance. But this is a transient and temporay state that disappears as the cataract progresses.
Please see you eyecare professional for evaluation and discussion of your concern.
Edward N. Burney, MD FAAO FACS
Professor Ophthalmology, CWRUSOM
Director Anterior Segment and Glaucoma
University Hospitals Eye Institute
Director Ophthalmology VAMC Wade Park
This includes your eyeball which often gets bigger, and vision becomes more distorted, as you age.
This is especially true among nearsighted persons whose retina becomes further and further back (posterior) as the eye swells to achieve its final shape.
When this happens, the image upon the retina becomes out of focus and glasses are needed to place it once more put it into focus.
You can think of the analogy of a projector perfectly displaying an image up
your age/or the presence of particular type of cataract will determine
this. As always, better to see your local eye doctor to find out for sure
as there are more serious diagnosis that can permanently change your vision
if not treated appropriately.
- recommend evaluation by eye professional to discuss ways to improve your vision
Options are correcting your vision with eyeglasses, contacts, or in some cases Refractive Surgery.
There are countless reasons as to why vision can be getting worse. Most commonly it is short sightedness or myopia which can start in the teenage years. Without an examination by at least an optician it is unfortunately impossible to answer this question accurately.