They see if you have any flying experience. Then, look at your qualifications, whether you have basics in Science. It does not matter if your highest qualification is relevant to flight. There are many with dip in biz, comms, and degrees majoring in life science, business, even medicine. Many from different industries have also applied and successfully got in. Eg, Insurance Agents, former doctors, property agents, administrator, IT specialists and etc. So if you did not have any flying or flying related background in school, you still stand a fair chance.
Eyesight is one of the most important factors. So is height.
Honestly saying, you will be surprised by the number of applicants that apply whom actually don't meet the stated requirements on the application.