1. To reduce the time when you check stock.
2. This program is created for avoid the mistakes such as wrong calculation, account book, etc.
3. To reduce using the paper.
4. To help customer order the product such as, sunglasses, contact
lens at their home.
5. For people who knows their eyes sight they can select their eye glasses style and tell the optometrist to makes a pair of glasses at home, so that they don’t have to wait in front of the shop.