Will a full ERBIUM-YAG around the eyes leave a permanent line of demarcation?

When this procedure is performed by an experienced, board-certified dermatologist, it should not leave a demarcation line. A qualified doctor will know how to feather in the laser treatment to prevent this from occurring. Keep in mind you will see color changes to the skin after your procedure, as treated skin is likely to look very pink. However, the skin tone should even out in the weeks following your procedure as the skin heals. 

Thank you for sharing your question. Without seeing a photograph it is hard to determine your best option. If used properly, a demarcation line between treated and untreated skin should not occur. It is always a good ideas for the doctor to feather out the treatment a bit just to make sure there is no demarcation line. It sounds like your doctor who has many years of experience with the Erbium Laser is a good choice.Good luck,

Erbium laser is a safer alternative to CO2 laser surfacing. Regardless of method of resurfacing, and depending on intensity of treatment, there will be fresh pink skin after the procedure. This will take several weeks to months to fully blend in to the surrounding skin. You will be able to notice the difference between the treated and non-treated areas during this time. Long term aftercare is important in preventing pigmentation changes. In most cases, the new skin will blend in with the surrounding skin. However, even under the best circumstances demarcation remains a known risk. Hope this helps answer your question.