Your symptoms are suggestive of poor tear film
. I don't believe it is related to the NAION.
Treatment is to try to restore the integrity of the tear film. First, I recommend using over the counter artificial tears 4-6 times a day (such as Refresh or systane). For long term relief, you may consider punctal plugs that limits the drainage of tears away from your eyes.
For the oily layer, I also recommend starting on warm compresses of your eyelids. This will help soften the plugged up oil glands of your eyelids. After the warm compresses, you can use dilute baby shampoo in warm water, scrub the bases of your eyelashes with the pads of your fingers. Do this at least twice a day. At night, you can use an eye ointment to prevent it from drying out, also available over the counter.
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Disclaimer: Information provided is for educational purposes only and does not establish a patient-physician relationship nor substitute for a personal consultation with a physician.