non-prescription; plano; without optical correction
Used for glasses, contact lenses, or sunglasses that have no corrective power (0 diopters). Often appears as 度なしレンズ or 度なしメガネ.
These sunglasses are non-prescription, so anyone can wear them.
I bought plano colored contact lenses.
Alternate kanji spelling using 無し; less common but still seen.
Compound of 度 (ど, 'degree' or 'diopter') + なし ('without'). Literally 'without degree'.