Hello,
Noting your complaints, when you were 11 you had power in your left eye of -1.5 D and not in your right one, and for the same the ophthalmologist prescribed you power glasses for your left eye and advised you to cover it for some Duration in a day so that your right eye does not loose or reduce its ability to function equally to your left one, and if not done your right eye will always be the one performing and compensating for it.
Once you had complaints of headche, blurrung vision and burning in eyes did you visit the ophthalmologist for a checkup or are you resusing the same prescription glasess from before?
If you are reusing the same glasses without getting a new eyecheckup, it is highly possible for a change in your eye power that you are no longer comfortable with the same lens prescription in those glasses.
As you already had a specific condition diagnosed at 11 years, it is necessary for you have a regular eye checkup atleast once every year or on the advise of your ophthalmologist whenever required.
It is important for you to have these checkup as during this time period of your growth there is high possibility for your power to change, and this change in power should be monitored for, in what time duration it is happening.
With your mentioned complaints this is the most likely possiblity, when you strain due to a blurry visin you get a headache and also birning senstaion in your eyes.
Next Steps
A visit to the ophthalmologist, with a detailed history take from you and an examination will provide you the exact diagnosis.
Health Tips
Do consult an ophthalmologist.
- Try to rest your eyes while studying and having screen time after every 20 mins by focusing at a different site, away from your books or screen.
- For the burning sensation you can try
Eye Drop LUBREX or ECOTEARS- 2 drops one in each eye 4 to 5 times a day, but this will provide you relief for this symptomat, not correct your actual problem.