The number is unknown. But there are hundreds of lenses in there eye.
it has either 5000,15000 or 30000
An insects eye is made up with many many small lenses, all joined side by side. Each lens sees only a small part of the scene but taken together they give a complete view of what is around the fly. As the eyes is made up of lots of small bits it is a 'compound' rater than a single structure - hence compound eye.
You will need to visit an eye doctor and get a prescription for contact lenses.
about seven thousand
Dragonfly has many lenses in it's eye. Probably nature thought that many lenses are required to see many objects. So it is probably natures experiment in evolution of eye. You have single lens in each eye of more evolved animals.
concave and convex lenses are used in eye glassses
Colored contact lenses will do the trick.
Yes, lenses in both.
About eight thousand, four thousand in each eye.
if you have an eye infection you shouldn't be wearing contact lenses.
Lenses is known as a virtual lenses. This is something that you put on the eye to help see better.