Sorry for the loss of your husband. I can understand how hard it must be.
Yellow of the eyes is most commonly associated with jaundice or elevated bilirubin. This is common in liver disease as you already know. I am not aware of other disease or if alcohol by itself can cause this yellowing.
A yellowing of the conjunctiva may be seen with aging and UV damage over time. The year long alcohol could have been accompanied by nutritional deficiencies -- this could be contributing to the discoloration that your are seeing. Yellow eyes due to jaundice is reversible. Yellow eyes due to other reasons may not be readily reversible.
The eye whitening procedure that you mentioned involves removal of the surface layer of the conjunctiva. This procedure is not without risk. The procedure is commonly done of conjunctival scar tissue (pterygia, pinguecula), but not many ophthalmologist
offer it for red or discolored conjunctiva. I do not have experience with the procedure myself, so difficult to comment one way or the other.
Here is a the website to the Korean doctor who first promoted the technique.
Here is the website for Dr. Wachler in Los Angeles who also offers the same surgery. Cost is about $3000 per eye.
Remember to press the green accept button. It was a pleasure helping you with your question. Best wishes to you.
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.