Chinese new year is coming and this is a gift idea for your parents - the ThinOptics reading glasses.
If a nearby RadioShack is closing the store, you may get 25-50% off from $24. It is well worth of owning except two problems:
1) It is not so secure on your nose - it may fall off at anytime before any symptoms.
2) It is not suitable for laptops. To put it on your nose, the glasses must face down. The angle is good for phones, tablets and books but not comfortable for laptop screens - you must raise your head and then look down.
Watch this video for details: