These amazing, award-winning glasses actually adjust your focus, indoors or out, making a myriad of costly glasses with different lens types unnecessary. These glasses allow you to clearly see any object from close up, to middle distance, to further away - all via a simple twist of a discreet dial. No more swapping one pair of glasses for another to meet the needs of the task in hand. Providing you don’t suffer from astigmatism these glasses can correctly focus the vision of 90% of spectacle wearers from -6 Dioptres to +3 Dioptres. What this means in real terms is that unless you have exceptionally short or long sightedness the glasses will work for you. Ideal as a spare pair, Adlens is a durable, lightweight unisex design anyone will enjoy wearing, and will suit up to 90% of spectacles wearers. Adjustable focus eyewear is not intended to replace prescription eyewear or examinations by eye care professionals. Never disregard or delay getting professional eye health advice: eye examinations can detect serious health problems that have no signs or symptoms.