is it possible to contract genital herpes through masturbation?
Yes you can.
Herpes is spread through skin-to-skin contact. It can be spread from one part of the body to another, such as from the genitals to the fingers, to the eyes or other parts of the body. Herpes can also be spread from a mother to her baby when she gives birth.
Anyone who is sexually active can get genital herpes. You may get genital herpes if you have sex with an infected person. You can also get genital herpes if you have oral sex with someone who has cold sores. You can still be infected even if your partner doesn’t have an open sore, or any signs or symptoms of genital herpes.
I doubt it...unless your hands etc, were in contact with someone thats has it. Stop it anyway, you'll go blind.