This article has been posted before, but it is interesting.
http://www.ophmanagement.com/article.aspx?article=&loc=archive\2003\december\1203024.htm
Think about all of the equipment you need just to set up a practice. Ophthalmology equipment is not cheap.
Expenses
Office space rent (electricity, water, sewage, heating/cooling)
Computer system
Filing System
Front desk clerk
Technicians X 2
Lanes (exam chair, stool, projector, screen&mirrors, phoroptor, slit lamp, tonometer, direct ophthalmoscope, muscle light, retinoscope, indirect ophthalmoscope, free lens set) X2 or 3
Hertel exophthalmometer
Autorefractor
Tonopen
Lensometer
Lenses
Procedure room (chair, light, stool, instruments, autoclave)
Paccymeter (standard of care now a days)
OCT (getting to be standard of care)
StereoFundus Camera
Automated Field Machine (std of care)
YAG laser
Drops
A-scan
+/- B-scan ultrasound
+/- Argon Laser
+/- FA camera
How many hundreds of thousands of dollars does that add up too. I'm scared to think about it. If you want to set up a practice, you will not be making 200K, you will be poor for a while.