Nowadays I have seen people wearing specs in childhood but they become adult they don't. How is it possible?

I am in awe of the greatness of this question. Such a relevant and eye opener question

When you're growing up, you can develop deformities in your eyes which can lead to blurred vision. For eg. the eyeball shape can be irregular etc. These deformities can go away with age.

Lasik or contacts

Hello sir could you please refer me. I have 2+ years of working experience as a Software Developer.