6/9 vision is also a very good vision which is normally good in most cases for all major day today works.
why it has not come to 6/6 can be because of lot of issues
Next Steps
go through this article to clear your doubts
"Facts Fixer - Lasik" by Dr. Anshuman Vaish - https://www.practo.com/healthfeed/facts-fixer-lasik-27195/post
Health Tips
Half of the worlds population who is not wearing glasses is not 6/6 in both eyes. so not to worry as such