What is the kind of work u r doing? Is it more computer work?
These kind of long standing dry eyes don't resolve just with lubricant.... U need to add molecule which will improve ur tear quality... In sense improve all three tear layers like mucous, aqueous and
lipid.
Next Steps
Start with lubricant named Systane Ultra eye drops 1drop 3-4 times a day.
Eye drop Restasis ( cyclosporine 0.05%) 1drop two times a day. [Restasis eye drop comes in multidose bottle and preservative free unims] go form unims if cost is not an issue.
Health Tips
Take brakes between work.
Focus at far objects for 20 secs every 20 min.
wash ur face with cold water and oftenly.
If using computer make sure it is lower than ur eye level to reduce exposure.