This is my eye. This would have been much easier if I'd had a model. The two light sources are the umbrella(blue gel on strobe), and a Sunpak 383 flash positioned partly behind the umbrella, gelled orange. The bright orange spot you see at the lower left of the umbrella is the Sunpak(actually you are seeing half of it). It took me several tries to get the umbrella in the center of my pupil, while aligning the Sunpak to light only half of my eye, and keeping everything in focus.
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