Some amount of difference in vision in two eyes is a very common observation amongst patients and to some extent is normal.. dryness often persists beyond 3 months and if there is increased screen time dryness increases a lot.
Next Steps
continue use of lubricating eye drops your surgeon must have started
Health Tips
do warm water fomentation . dip handkerchief in lukewarm water and keep over closed eyes for 1 or 2 minutes only..
visit your lasik surgeon if problem persists