Use this application you will be able to keep your lens usage information.
Some lens comes with expiry date and some has limited use count,
this application keeps history of this information.
Also you can attach notes with the lens you are using,
so that it is easy for future reference.
You can view the history of you lens use.
When you start using, how many times you wear lens.
Also the optional notes attached with each record.
You can mail this record so that you can report
your optician about your current use.