Hello,
All haloes do not mean glaucoma, however your power of -6 is a risk factor.
Do u have haloes all the time or only when you wake up? Any redness or itching of eyes?
3 main reasons for haloes...1. mucus due to allergy where haloes break off when you blink or wash your eyes.
2.. cataract ( not possible for your age)
3. Glaucoma
Any blurry vision?
Next Steps
start by using lubricant eyedrops.
consult ophthalmologist ( proper physical consultation) if your haloes persist.