The Pip-Boy medical enhancer consists of a storage holodisk, microfilament cord, headgear, and an optical sensor that is placed over the user's left eye. When used, an optical flash transmits a dictionary of physician skills and know-how into the user's memory, permanently improving the user's Doctor skill by +10%.
For a reward, Renesco can be asked for money, a discount on his wares, or just let him keep them. If the reward is declined, there is an option to ask Renesco how the glasses are working out. Doing that 20 times will annoy him into throwing the medical enhancer.