Glasses aren't just good for your eyes. They can be a boon to income, too
That's the finding of a new study in Bangladesh, which gave reading glasses to hundreds of people and then measured their earnings.
Reading glasses
Corneal Implants Might Make Reading Glasses Obsolete
For most people, the need for reading glasses is as inevitable as gray hair and wrinkles. Companies are experimenting with corneal implants to improve the ability to focus close up.