suppurative uveitis
Introduction
Introduction to suppurative uveitis Suppulative uveitis is caused by a purulent bacterium or fungus that enters the eye and causes infection of the uveal tissue in the eye. It is also called suppurative endophthalmitis. The inflammation can start from the anterior uveal or posterior uveal dysplasia. Violent, rapid development, pigmented membrane tissue dissolution, a large number of purulent exudates appear. The disease usually occurs after the perforated trauma of the eye, and after the foreign body injury in the eye, the wound contamination caused by the perforated ocular trauma and the foreign body in the eye is not treated in time. A few patients occur after the perforation of the corneal ulcer. Very few patients develop severe sepsis, but most of the patients are in a state of coma or paralysis, so there is no way to take care of the eye. Rare cases are also seen after intraocular surgery. If the diagnosis and treatment are not timely, it can cause serious damage to the eye tissue, resulting in loss of vision and atrophy of the eyeball. basic knowledge The proportion of illness: 0.0009% Susceptible people: no specific population Mode of infection: non-infectious Complications: intraocular foreign body sepsis
Cause
Cause of purulent uveitis
1, exogenous: due to eye trauma, intraocular surgery and corneal ulcer perforation and other bacteria directly into the eyelids, surgery caused by endophthalmitis, common Gram-negative bacteria caused by Pseudomonas aeruginosa, but trauma by fungi, anaerobic Bacteria and a variety of microbial pathogens are more common than postoperative infections. In general, inflammation occurs 24 to 48 hours after surgery, but current routine subconjunctival injection of antibiotics and corticosteroids is postoperative, so endophthalmitis can be extended to postoperative 2 to 5 days of emergence, if the pain increased 24 to 48 hours after surgery, should consider the more toxic microbial infection, fungal endophthalmitis symptoms after surgery or 2 to 3 weeks after injury.
2, endogenous: endogenous (or metastatic) infectious endophthalmitis is characterized by fungal infection, is caused by blood flow to the eye infection, pathogenic bacteria can come from distant infections or systemic Sepsis, usually insidious onset, is slow to progress.
Prevention
Suppurative uveitis prevention
The disease develops rapidly and is extremely dangerous. It can quickly cause blindness and eyeball atrophy. It is very important to timely diagnose and treat. For perforated ocular trauma, especially when the eyeball stab or foreign body enters the eyeball and the injury is serious, if it is not timely Treatment, there may be suppurative endophthalmitis, which may lead to incurable blindness within 1-2 days, and the spread of inflammation can cause full ocular inflammation, even to the formation of cavernous sinus thrombosis in the skull, therefore, for perforation Patients with ocular trauma and intraocular foreign body injury should go to the hospital in time to clean the wound, suture the wound, remove the foreign body and give antibiotics to prevent infection. Of course, prevent the occurrence of ocular trauma and strengthen the disinfection of the instrument during internal eye surgery. It is the key to preventing this disease.
Complication
Suppurative uveitis complications Complications intraocular foreign body sepsis
In severe cases, it can develop into full ocular inflammation. This disease occurs after the perforated trauma of the eye, and after the foreign body injury in the eye, the contamination of the wound due to perforated ocular trauma and foreign body in the eye has not been dealt with in time. After the patient has undergone perforation of corneal ulcers, very few patients have developed severe sepsis.
Symptom
Suppurative uveitis symptoms common symptoms eye pain edema corneal opacity conjunctival congestion tear coma high intraocular pressure abscess nausea unilateral fundus appears ...
1. Have a history of eye injury or intraocular foreign body, or have a history of internal eye surgery, corneal ulcer, systemic fever and sepsis;
2. Have severe eye pain and eye irritation;
3. The vision is rapidly declining, and even the light positioning is not correct or the light perception disappears;
4. Eyelid edema, spasm and difficulty in opening;
5. Eyeball mixed with congestion, conjunctival edema, and purulent secretions;
6. anterior chamber empyema, corneal opacity;
7. Vitreous opacity, empyema, yellowish white after dilation;
8. Low intraocular pressure;
9. The fundus is generally glimpsed.
Examine
Examination of purulent uveitis
Ultrasound examination revealed vitreous volume of the glass, retinal detachment, and sometimes visible foreign bodies in the eye.
1. For the diagnosis of general suppurative endophthalmitis, the main frame A is checked;
2. In order to find the source of the whole body or to understand the visual function status, the inspection frame may include "A", "B" and "C".
Diagnosis
Diagnosis and differentiation of suppurative uveitis
Diagnose based on:
1. Intense eye pain, poor eyesight;
2. Mixed hyperemia, anterior chamber empyema, glass volume pus, low intraocular pressure;
3. Ultrasound examination can see the volume of pus in the glass, retinal detachment, and sometimes visible foreign bodies in the eye;
Differential diagnosis
Often need to be identified with comprehensive uveitis, Behcet's disease.
