How effective are serum drops for dry eye?

Excellent! Many patients that have not responded to ordinary measures for dry eyes, respond well to serum eye drops! the problem is producing these special drops individually for each patient!
Very effective. For the appropriate patient, autologous serum drops work very well. See more info on this and the step ladder approach to dry eye (to try to prevent need of autologous serum in patients who do not have an immunologic cause to their dry eye: http://eyedoc2020.Blogspot.Com.