I once dubbed a similar type of comb on a Wyandotte hen that was suffering from repeated scalpings when other chickens grabbed the long tail on the back of her comb and ripped it from her head.
These combs are not immune from pain when dubbing, but the dubbing can greatly improved the quality of life for such a chicken.
Dubbing a comb is a lot like sculpting a sponge. First numb the comb with ice cubes. Take very sharp scissors and trim away enough of this comb so it is no longer blocking the eye. You may take your time and make it look nice and balanced, and he can continue to be a very handsome boy.
Put sugar or corn starch on the raw tissue to stop bleeding. Then later when the bleeding has completely stopped, put antibiotic ointment on the raw part. The comb will heal so quickly, you will be amazed. No, the cut away part will not grow back, so know when to stop trimming.