1. First-time readers wearers
As you get older, you have to stretch your arms to read. You realize that you need to wear reading glasses. You feel a headache when you put on your new reading glasses and read. It is because if you are wearing glasses for the first time, your eyes and brain have not yet adjusted to the changes after wearing glasses. It is normal if you are a first-time readers wearer and feel a headache wearing reading glasses. This symptom will gradually disappear after you have a period of adaptation, don't worry.

2. Inappropriate Readers Prescriptions
When buying reading glasses, an appropriate prescription is crucial. If you wear reading glasses with too high a prescription, you will have unclear imaging and blurred vision. It causes eyestrain, resulting in sore eyes and even headaches. In this case, you need to change your glasses in time to suit your prescription.
3. Long Time Wearing Readers
Readers are generally used for close vision, such as reading books, reading newspapers, watching TV, etc. Reading and looking at the screen for a long time will reduce the frequency of eye blinking, and eyes get tired. Besides, keeping the head down for a long time while reading will cause the cervical spine to be excessively curved, which can hinder blood circulation and cause the insufficient blood supply to the brain, which will lead to headaches after wearing glasses for a long time.
How to Avoid?
Now that we know the reasons why wearing readers causes headaches, we can find the solution.
1. Do an Eye Exam before Buying Readers
It is necessary to have an eye exam before you get a pair of readers. The doctor will tell you your PD, strength, and other information to help you decide which power readers you need. It prevents you from buying reading glasses with the wrong prescription.
2. Develop Good Habits
As we all know, eye strain causes a headache, so taking a break when you have to work or read for a long time is necessary. The 20-20-20 rule is a great way to reduce eyestrain. Every 20 minutes, take a 20-second break and focus your eyes on something at least 20 feet away. In addition, it is also a good living habit to get up and move around after sitting for a long time to relieve the pressure on the neck caused by bowing your head for a long time to avoid headaches.
