It depends on the severity of the problem. You’re obliged to inform the crew in case some severe condition exists, especially when you’re above the age of 40 in which case you’d be allowed to jump at their discretion.
Actually, bungee jumping can put vision at risk. There has been a certain case where a blood blister was reported to have been formed in the back of a lady’s eye who took a plunge while tied to the bungee. Since such cases are very rare we can’t recommend not to bungee jump, but it is a potential complication of this sport.