My glasses just broke and I have to wait a few weeks for an appointment with the optician, so I want to buy a really cheap pair online to use until then.My contact lenses are -3.50 for both eyes but the website is asking for my prescription details (sphere, cylinder and axis). What should I write for these values, at least to make the glasses functional? I know you shouldn't use glasses without the proper prescription but it will only be for a short time and I don't have any other options.
>>> How to figure out my prescription?