Hey, so testing seems to indicate that the bonus from light to Surgery Success Chance caps at 50%, and the additional light from the Sun Lamp doesn't increase it further. We checked by looking at the chance listed in the bed info, which was unchanged when using a sun lamp or standing lamp.
I've removed the section for now, but if you've got a reason for thinking that that value in the info tab is wrong, or that the light modifier applies elsewhere in a way that doesn't cap please lemme know so I can reinstate it. I don't want to discourage editing so if I'm wrong about it please tell me.