My eye doctor's assistant was quite surprised when I said that I've never worn glasses before. She said it's unusual to first get glasses at my age (I'm 20) at this strength. Will the lenses be thick? What material should I use for them (glass, plastic etc).
Prescription:
Left: -1.75
Right: -1.75
Added (1). I'm a female so I should have stopped growing by now.
Added (2). IMPORTANT: WHAT LENS MATERIAL SHOULD I ASK FOR?
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Is this prescription considered to be strong?