The Great Optical Experiment

I have been nearsighted since my childhood, but because my family is quite poor, I do not have the money to afford a pair of glasses. When I see things, I always narrow my eyes in order to see them clearly. Then my vision becomes worse day by day, and the strength of vision deepens quickly.
When I was worried about my vision, my teacher found my condition, and she advised me to buy a pair of glasses on the Internet, because the price of glasses in the internet is quite cheap which I can afford to. However, I do not know how to shop on the internet and have no knowledge about the online shopping. Finally, my teacher helped me buy glasses over the internet by her own computer.
Firstly, she took me to the hospital to examine my eyes, and copied the prescription; then she began to browse the internet to seek a better online glasses store among thousands of the glasses shops in the Internet. Then we decided to buy glasses in the GS online glasses stores. My teacher gave the prescription to the website, and made a long conversation with the concerned people of that website to understand the process of purchase, and asked them for help when we met problems during the process through the live chat. In the GS, the cheapest glasses are 8 dollars, and most of their glasses are about 50 -80 dollars. The concerned people recommended us a new service to help us choose the suitable glasses---virtual try-on system. According tot their introduction, we uploaded my pictures on the website, then put the glasses we chose on these pictures to see the effect. Finally, with the help of the website, my teacher helped me buy a pair of very good glasses at the cheap price and excellent quality.