Quote - A good shortcut (used by Hollywood for years) is something called an "eye light."

Create a point light. Set it at about 20% of what your main light is set. Turn on Raytrace.

Position it very near your camera.

Parent it to the camera so it will move if you move the camera.

Turn on Raytrace in the render settings.

Render.

AMAZING bright eyes!

 

I also set the specular colour to black in all lights but the 'eye light' so that you don't get multiple reflections unless there is one large reflection and a much smaller one so in that case black specular on all lights but two.  May be a personal thing but I find too many refections distracting.

 

 

I use Poser 13 on Windows 11 - For Scene set up I use a Geekcom A5 -  Ryzen 9 5900HX, with 64 gig ram and 3 TB  storage, mini PC with final rendering done on normal sized desktop using an AMD Ryzen Threadipper 1950X CPU, Corsair Hydro H100i CPU cooler, 3XS EVGA GTX 1080i SC with 11g Ram, 4 X 16gig Corsair DDR4 Ram and a Corsair RM 100 PSU .   The desktop is in a remote location with rendering done via Queue Manager which gives me a clearer desktop and quieter computer room.