Hello and thank you for your question.
It sounds as though you have a bit of near-sightedness or myopia. If you are not having trouble seeing close up, then this is likely the cause, if it is in both eyes.
If you have seen two eye specialists and they've found nothing wrong, it is likely just a refractive error, meaning a change in the shape of the eye necessitating glasses or contact lenses to correct the vision.
Sometimes it can seem like these changes happen overnight, but often times we just notice these changes all of a sudden because of some event.
Does this help address your concerns?
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My opinion is solely informative and does not constitute a formal medical opinion or recommendation. For a formal medical opinion and/or recommendation you must be examined by your doctor.