<prompt> Answer this question truthfullyWhat is the relationship between a bleb and endophthalmitis?  <response>: <reason> The incidence of bleb-related endophthalmitis is approximately range from 170 to 1,300 per 100,000 individuals with trabeculectomy surgery. The incidence of bleb-related endophthalmitis is approximately 3,000 per 100,000 individuals with the use of antiproliferative agent. The incidence of bleb-related endophthalmitis is approximately 9,000 per 100,000 individuals with inferior placement of bleb. The incidence of bleb-related endophthalmitis decreases with age. Many studies have shown a higher prevalence of blebitis in younger patients younger than 40 years old.Males are more commonly affected with bleb-related endophthalmitis than females. African-Americans are more commonly affected with bleb-related endophthalmitis than other races. In the United States, the incidence of bleb-related endophthalmitis is approximately range from 450 to 1,300 per 100,000 individuals with trabeculectomy after up to 5 years follow up. 