Robert C. Layman, O.D.
abnormal, your doctor would let you know. Please try not to worry, it is normal for the eyes to change, but please continue seeing your doctor every year to stay on top of any health problems that could arise.
Do you have Diabetes, or any other blood sugar disorder, High Blood pressure, Elevated cholesterol, thyroid disease,cancer or neurodegenerative disease? If the answer is no GREAT. Lets take the next step and review your refraction or measurement of the focusing capability of the eye far and near.. Does the refraction relatively stronger or weaker than last year? Has your job changed? Are you spending ore time on a digital device for work or recreation? Are there additional or fewer stresses on your vision now? Are you approaching your 40s? Does the problem show up reading or driving? Is glare worse at night? So the answers range from body and health issues, work and recreation tasks, developing cataracts or the normal processes of adding that extra year.
During an eye test, the health of the eyes are generally checked out as well, so if there was an underlying issue, we would be able to pick it up.
If you're not sure, get a second opinion.
Also, with regards to the glasses, it's very hard to predict when the vision will stabilise, please be assured that vision and health can be 2 different things, and even someone with very healthy eyes may need stronger glasses every year.
If a person has very high amounts of myopia, this could be cause for concern of excessive thinning of the retina and subsequent problems with best-obtainable vision. This should be evaluated annually with a dilated retinal examination.
If you are a person who spends a lot of time on near work and/or computers, I would suggest trying to take visual breaks so as to relax your visual system. Letting your eyes defocus throughout the day may help in preventing progressive changes in your vision.
depending on the type of refractive error you have and your age. If you
are under the age of 22 years and if you are near sighted (myopic) (blurred
distance vision without glasses), this slight change each year is very
normal. Typically a myopic person's refractive error (glasses prescription)
will be fairly stable throughout your 20s and 30s. After age 40, a person's
eyes will go through changes requiring the need to add a bifocal to your
lenses. Again, this is completely normal. If a person if far sighted
(hyperopic) (blurred near vision without glasses and/or eye strain with
reading), a slight change each year is normal, even throughout your 20s and
30s. After 40, a bifocal will help you see optimally at distance and near.
If you have astigmatism (especially high astigmatism) it is not unusual to
find slight changes each year. An increase in astigmatism every year
throughout your 20s and 30s would trigger an investigation of the health of
your cornea to rule out corneal dystrophies such as keratoconus. No matter
what your age, large, frequent changes or fluctuations in your prescription
could possibly indicate systemic issues such as high blood glucose levels
or can occur with some medications such as oral steroids. Since you mention
slight change yearly, it is unlikely due to systemic issues or to a corneal
dystrophy. As you can see, the answer to your question can vary based on
your age and type of refractive error you have.
Keep getting your eyes checked annually and let me know if you have further