Because of this, 80% of uveitis experts report that glaucoma surgeries for uveitic glaucoma patients are likely to fail. Surgery in an eye with uveitis is associated with a higher complication rate, and in some cases surgeries such as valve implantation are too complicated to perform. Prognosis for  uveitic glaucoma patients
About 30% of uveitis patients also develop uveitic glaucoma. Uveitic glaucoma patients are at significantly higher risk for visual field loss in the long term (>5 years) compared to patients who only have uveitis. A patient who only has glaucoma (without uveitis) will, on average, become blind in one eye within 20 years of glaucoma onset. This is especially devastating given that the majority of uveitic glaucoma patients are diagnosed with uveitis at a relatively young age (in their thirties). Thus developing glaucoma at a young age and the cumulative damage of uveitis flare-ups put these patients at high risk of losing their eyesight. The burden of care for uveitis glaucoma patients is also higher than that of uveitis patients without glaucoma. On average, doctors report 60% more visits from uveitic glaucoma patients than non-glaucomatous uveitis patients. Doctor visits are 40% longer for patients with uveitic glaucoma than for uveitis patients without glaucoma. Epidemiology
According to epidemiological studies, the prevalence of uveitis is estimated at 115-316 occurrences in 100,000 people. About 30% of patients with non-infectious anterior uveitis also develop glaucoma. Accordingly, 34-94 people in every 100,000 patients with uveitis will develop glaucoma.
Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity. The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma. A perforated appendix seldom causes a pneumoperitoneum. Spontaneous pneumoperitoneum is a rare case that is not caused by an abdominal organ rupture. This is also called an idiopathic spontaneous pneumoperitoneum when the cause is not known. In the mid-twentieth century, an "artificial" pneumoperitoneum was sometimes intentionally administered as a treatment for a hiatal hernia. This was achieved by insufflating the abdomen with carbon dioxide. The practice is currently used by surgical teams in order to aid in performing laparoscopic surgery. Causes
Perforated duodenal ulcer – The most common cause of rupture in the abdomen. Especially of the anterior aspect of the first part of the duodenum. Perforated peptic ulcer
Bowel obstruction
Ruptured diverticulum
Penetrating trauma
Ruptured inflammatory bowel disease (e.g., megacolon)
Necrotising enterocolitis/pneumatosis coli
Bowel cancer
Ischemic bowel
Steroids
After laparotomy
After laparoscopy
Breakdown of a surgical anastomosis
Bowel injury after endoscopy
Peritoneal dialysis (PD), although the prevalence of pneumoperitoneum is estimated to be less than 4% among people with PD in a more recent study in the United Kingdom. Vaginal insufflation (air enters via the fallopian tubes; e.g., water-skiing, oral sex)
Colonic or peritoneal infection
From chest (e.g., bronchopleural fistula)
Non-invasive PAP (positive airway pressure) can force air down duodenum as well as down trachea.