There are some general guidelines that can help you maintain optimal vision and ensure that your glasses are always adequate for your visual needs.
Regular eye exam: It is advisable to have an eye exam at least once a year, or every two years, if you do not have any specific vision problems.
Changes in Vision: If you notice that your vision is less clear, you experience headaches, eye strain, or difficulty seeing up close or far away, you may need a new pair of glasses even before your scheduled eye exam.
Specific conditions: For some eye conditions, such as presbyopia or worsening myopia, you may need to refresh your glasses more frequently, often every 1-2 years.
Wear and Damage: Even if your prescription hasn't changed, your glasses may need to be replaced if the lenses are scratched, the coating is damaged, or the frame is warped.