Question

how does an eye lens differ from a double convex lens used in physics lab

Answer 1

the eye lens have the capability to change the focus according to the distance of the object . this is called accommodation of the eye.

on the other hand the focus of the double convex lens of the physics lab cannot be change

Answer 2

Human eye has convex lens which enables us to see the wonderful world.
Following are the differences between eye lens and convex lens used in physics lab:
Eye lens:
1.It is made up of fibrous tissues and living cells.
2.It has ability to change the focal length based on object position.
3. The image distance is fixed .( distance between Lens and Retina)
4. It has blind spot
Double convex lens:
1. It is made up of glass.
2. Focal length is fixed for a given lens.
3.Image distance changes based on object distance.