I am very nearsighted (-7.5 in both eyes), I've worn daily contact lenses almost exclusively for 20 years. I also have non glaucoma ocular hypertension which puts me at a higher risk for retinal detachment. I have no headaches or eye strain after long screen days, but I do get blurry vision and lots of floaters after long screen days. If you want to know anything else I'd be happy to chat.