So I'm currently shadowing an ophthalmologist and was thinking about asking for a letter of recommendation from them. Would this count towards one of the letters of recommendation from an optometrist or does it not count since they have an M.D. and not and O.D.? Also, can I use the hours of shadowing from them as part of my total shadowing hours on my application? How many hours is considered appropriate before asking for a letter of recommendation? I'm shadowing one ophthalmologist for 19 hours and another for 32. If anyone has any experience or insight on this matter, I would really appreciate it!