Eye health resource
Does Wearing Glasses Weaken Your Eyes?
Prescription glasses do not weaken your eyes or make them dependent on lenses. Learn why prescriptions change and when correct glasses matter for children and adults.
Reviewed for accuracy by Justin Bazan, OD on .
No. Wearing properly prescribed glasses does not weaken your eyes or make your natural vision deteriorate because you became “dependent” on the lenses.
Glasses compensate for the way your eyes focus light. They do not train the eyes to become lazy, and removing the glasses does not reveal damage caused by wearing them.
Why Can It Feel Like My Eyes Got Worse After I Started Wearing Glasses?
Once you become accustomed to clear corrected vision, the blur without glasses can feel more noticeable than it did before. That change in perception does not mean the glasses weakened the eyes.
Prescriptions also genuinely change over time. Myopia often progresses during childhood and the teenage years, presbyopia develops with age, and other refractive changes can occur throughout life. Those changes would occur because of the eye's biology, not because a person wore glasses.
What Do Glasses Actually Do?
Myopia, hyperopia, and astigmatism are refractive errors: the eye's optics do not focus light exactly where it needs to focus for clear vision. Eyeglass lenses bend light before it enters the eye so it reaches the retina more appropriately.
Presbyopia is different. As the crystalline lens ages, it becomes less flexible and near focusing becomes more difficult. Reading glasses, bifocals, or progressive lenses supply the extra near power the aging eye can no longer generate as easily.
Will Not Wearing My Glasses Damage My Eyes?
For most adults with ordinary refractive error, going without glasses causes blur and can make some activities difficult or unsafe, but it does not usually damage the eyes or permanently worsen the prescription.
Whether glasses should be worn full-time depends on the prescription and the visual task. Someone who is mildly nearsighted may use glasses mainly for distance; another person may need them all day for driving, work, school, or comfortable binocular vision.
What About Eye Strain and Headaches?
An uncorrected or outdated prescription can contribute to blur, squinting, fatigue, or headache in some people. But eye strain is not proof that the eyes are being physically weakened.
If glasses themselves cause headache, dizziness, persistent blur, or discomfort, the prescription, lens design, measurements, frame fit, or adaptation should be checked.
Are Children Different?
Yes. Appropriate correction can be important for normal visual development in children. A large prescription, unequal prescriptions between the eyes, or eye misalignment can contribute to amblyopia if the brain does not receive a clear and useful image during early childhood.
That is different from saying glasses themselves stop or cause myopia progression. Children whose myopia is increasing may benefit from a separate myopia-management discussion in addition to having clear vision corrected.
Can the Wrong Prescription Harm My Eyes?
In most adults, an inaccurate eyeglass prescription is more likely to cause blur, discomfort, or headache than permanent eye damage. In younger children, however, appropriate correction can matter for visual development.
Read more in Can Wearing the Wrong Prescription Damage Your Eyes?
Why Do I Need New Glasses If Glasses Do Not Weaken My Eyes?
Because the eyes and visual demands can change. A new prescription may be needed because of normal refractive change, growth, presbyopia, medical conditions, medications, or simply because the old lenses no longer provide the best vision.
A refraction measures the prescription that provides the clearest and most comfortable correction. Park Slope Eye uses the Topcon Chronos Automated Binocular Refraction System to combine objective measurements with your own visual comparisons as the doctor refines the final prescription.
Your Prescription Is Yours
If a refraction is performed, your eyeglass prescription is yours whether or not you buy glasses at Park Slope Eye. Our in-office optical is available if you want us to provide a quote and help select appropriate frames and lenses.
If your vision has changed or your current glasses no longer feel right, book a comprehensive eye exam.
Originally published . Substantially updated .