press 'L' to embiggen in the dark
i shot this with the canon EF 100mm f/2.8 USM macro plus a marumi close-up +4 filter, using EOS utility's remote live view. you can see the reflection of my eye in the software window on the monitor.
you can also see my contact lens.
i started out trying one of those super-close-ups of the iris, but it really isn't that interesting so i backed off.