Buy And Sell Gift Cards Both My Eyes Have The Same Rx, Can I Buy 1 Box For The Right Eye And Wear It In My Left Eye?

Both my eyes have the same rx, can I buy 1 box for the right eye and wear it in my left eye? - buy and sell gift cards

Do I have to carry a box of contacts for the right eye and one for the left eye, or can I save money and buy 1 box and contact lenses in both eyes? I often mix my contacts and did not know that it is right or left. I'm trying to save money. Thank you!