What type of sunglasses do you wear when you are flying? I'm having trouble reading ny Ipad with the pair I have now. I end up flying with my reqular glasses but then having problems seeing my drone when I wear them because of the sun. And I hate clip on sunglasses.
This discussion has arisen before, in regards to those of us who need reading glasses (e.g.: presbyopia) due to age over 40 or 50 years old. I am a retired ophthalmologist, so I know a bit about this. Still, the subject or glasses is a mess with me! It really depends on a lot of factors.
(1)Normal vision (Emmetropia) Firstly, do you have any prescription for your eyes? (we call it a refractive error). If not, and you are not over reading glasses age (40-50 years old or so), you should be able to read the screen without reading glasses. If you have normal (no glasses needed) vision, you should also be able to see the drone without glasses. You would only need sunglasses for the glare, if the drone is in the sunlight.
(2) MYOPIA. If you are nearsighted (can't see things far away but see books without trouble) you would not need glasses for your screen but you would need them for the drone, and for sun, glare.
(3) HYPEROPIA (farsighted) If you are far-sighted (can see far away better than close up), you'll need glasses for both.
Still, in all, every case is different. I find myself balancing two pairs of glasses! (sunglasses and reading half-glasses) . Mostly, I'll keep the polarized Oakley sunglasses on top of my hat with a brim (baseball cap) to avoid glare. When I look straight up, sometimes, the hat and the glasses fall off! I can still make out my 9 1/2 inch iPad screen without reading glasses, even though reading glasses would help me better.
Each of us has to do whatever we are most comfortable with. There actually is no correct answer!
Hope this helps.
Dale
Miami