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Endophthalmitis
Endophthalmitides

Endophthalmitis is an infection of the vitreous body and the inner coat of the eye caused by bacteria or fungi. Inoculation of microorganisms from the external environment during surgery, trauma and hematogenous spread from distant sites in the body are the two modes of infection. Without an early diagnosis, blindness can develop rapidly.

Images

WIKIDATA, CC BY-SA 4.0

Presentation

Depending on the cause, the clinical presentation may somewhat vary:

  • Postoperative - Cataract surgery, secondary intraocular lens (IOL) implantation, penetrating keratoplasty, glaucoma drainage device implantation, trabeculectomy and vitreous procedures (vitrectomies or intravitreal injections) have all been associated with an increased risk for postoperative endophthalmitis [1] [2]. Symptoms can develop within the first six weeks (acute-onset) or after six weeks (delayed- onset) [1] [3]. Decreased visual acuity, eye pain, eyelid edema, ocular discharge, inability to visualize the fundus and hypopyon are typical signs, while the loss of red fundus reflex, light perception, and papillitis are seen in more severe cases [3] [4]. An insidious and prolonged clinical course is common for delayed-onset endophthalmitis [3] [4].
  • Posttraumatic - Approximately 25% of endophthalmitis occurs in the setting of ocular trauma [3], with decreased vision, swelling of the eyelid, severe eye pain, uveitis, vitritis, hypopyon and presence of corneal ring ulcers being the most important symptoms [3].
  • Endogenous - Symptoms of endophthalmitis as a result of hematogenous spread of bacterial or fungal organisms may be similar to exogenous forms, the most important signs being reduced visual acuity, eyelid edema, eye pain, and hypopyon [5]. Additionally, photophobia and the presence of floaters can also be reported in the majority of patients [5]. An absence of the red fundus reflex along with corneal edema and impaired visualization of the fundus, like in other forms, is frequently observed [5].

Entire Body System

  • Fever

    A detailed elicitation of history revealed that patient had been treated for enteric fever that presented with diarrhea and fever, two weeks prior to current presentation. [ncbi.nlm.nih.gov]

    The patient's systemic and ocular condition improved and the patient no longer had fever. [scielo.br]

    The patient was hospitalised due to general decline, fever and dyspnoea. As a respiratory infection was suspected, systemic empirical antibiotic coverage was provided with ceftriaxone. [revistanefrologia.com]

Musculoskeletal

  • Wrist Pain

    A previously healthy 42-year-old man presented to the Emergency Department with chills, fever, left wrist pain, left eye pain, and vision loss. [ncbi.nlm.nih.gov]

Eyes

  • Eye Pain

    Decreased visual acuity, eye pain, eyelid edema, ocular discharge, inability to visualize the fundus and hypopyon are typical signs, while the loss of red fundus reflex, light perception, and papillitis are seen in more severe cases. [symptoma.com]

    They may include: Blurred vision Increased sensitivity to bright light Mild eye pain Posttraumatic endophthalmitis. [drugs.com]

    He complained of a headache and blurry vision but denied having eye pain. Slit-lamp examination demonstrated leukocytes with a fibrinous membrane in the anterior segment and vitritis. [ncbi.nlm.nih.gov]

  • Anterior Uveitis

    This possible differential diagnosis should be kept in mind while treating patients with presumable sterile hypopyon and anterior uveitis having a high intraocular pressure. [ncbi.nlm.nih.gov]

    […] chamber) Keratitis, anterior uveitis, acute angle-closure glaucoma, scleritis, BUT... [kellogg.umich.edu]

    Endophthalmitis:  Symptoms :- - Rapidly worsening vision, pain,redness ,stickiness  Signs :- -White milky bleb with pus - Severe anterior uveitis with hypopyon -Vitritis, poor red reflex.. 11. [slideshare.net]

  • Visual Acuity Decreased

    The visual acuity decreased to hand motions or light perception postoperatively. The culture of aqueous and vitreous of the 2 eyes revealed Staphylococcus epidermidis and enterococcus faecalis respectively, however was negative for the third eye. [ncbi.nlm.nih.gov]

    Common symptoms and signs of acute infective exogenous endophthalmitis Symptoms Signs Visual blurring or loss Pain Purulent discharge Decreased visual acuity Decreased red reflex Eyelid oedema Conjunctival injection and chemosis Anterior chamber cells [racgp.org.au]

    acuity decreased below the level expected Lid edema Conjunctival hyperemia Corneal edema Anterior chamber cells and flare Keratic precipitates Hypopyon [5] Fibrin membrane formation Vitritis Loss of red reflex Retinal periphlebitis if view of fundus [emedicine.medscape.com]

  • Corneal Opacity

    opacity. 6 Figure 1. [retinatoday.com]

    Permanent loss of vision in patients with AOPE can occur through a variety of mechanisms, including retinal detachment, hypotony, and corneal opacity. [academic.oup.com]

  • Vitreous Floaters

    […] detachment, retinal haemorrhage, visual disturbance, eye pain, vitreous floaters, conjunctival haemorrhage, eye irritation, foreign body sensation in eyes, lacrimation increased, blepharitis, dry eye, ocular hyperaemia, eye pruritus et Nii pikalt ette [et.glosbe.com]

Neurologic

  • Headache

    He complained of a headache and blurry vision but denied having eye pain. Slit-lamp examination demonstrated leukocytes with a fibrinous membrane in the anterior segment and vitritis. [ncbi.nlm.nih.gov]

    […] prematurity Rx: Intravenous antibiotics, intravitreal antibiotics, and enucleation A 54-year-old man with pancytopenia presents to the emergency department with a 2-day history of left eye swelling, photophobia, excessive tearing, blurry vision, and frontal headache [ajnr.org]

    Symptoms : Symptoms of endophthalmitis includes loss of vision (partial), blurred vision, headache, pain in the eyes, photophobia, ocular discharge and intense ocular inflammation. [diseasespictures.com]

Workup

A thorough patient history is the first step in workup, as it can reveal vital clues regarding risk factors and pathogenesis of eye-related problems. Many authors suggest that typical signs and symptoms encountered in endophthalmitis are sufficient to make a diagnosis [1] [4] [5], but fundoscopy and a slit-lamp examination to support these findings must be performed. Vitritis, corneal infection, hypopyon, and clumps of thick material in the anterior chamber are some of the most common findings [4]. Imaging studies, such as magnetic resonance imaging (MRI) or computed tomography (CT scan) must be performed in the post-traumatic eye injury to exclude the presence of foreign bodies in other sites [1]. To confirm the underlying cause and determine optimal therapy, microbiological studies are necessary. A sampling of the vitreous humor, either by performing a vitrectomy or needle aspiration, is needed in order to obtain a viable sample for the investigation [4] [5]. Identification of bacterial or fungal pathogens are performed by culturing the samples in specific media, and vitrectomy carries a significantly higher rate of positive results compared to needle sample aspiration [4]. Detection of microorganisms by molecular techniques - polymerase chain reaction (PCR) and matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI-TOF MS) has recently emerged as a novel method with superior results compared to cultivation and other laboratory tests (eg. serology), but their introduction in regular practice is yet to occur [1] [2] [5].

X-Ray

  • Cavitary Lesion

    She was found to have a pulmonary cavitary lesion and fluffy white material in the anterior chamber. An aqueous and vitreous paracentesis grew Coccidioides species. [ncbi.nlm.nih.gov]

Microbiology

  • Streptococcus Bovis

    We report a case with bacterial endogenous endophthalmitis caused by Streptococcus bovis, developed after colonoscopy, which had a poor outcome and resulted in evisceration. [ncbi.nlm.nih.gov]

  • Aspergillus Niger

    Post-operative delayed fungal endophthalmitis; photograph (a) showing sectoral iris infiltration with Aspergillus niger requiring pars-plana vitrectomy, total capsulectomy, total iridectomy and removal of intraocular lens, photograph (b) showing white [intechopen.com]

  • Salmonella Typhi

    To report a rare case of Salmonella typhi associated endogenous endophthalmitis in an immunocompetent male and to review the available literature. Retrospective chart review. [ncbi.nlm.nih.gov]

Treatment

Further research into the components of endophthalmitis and its treatment may result in the discovery of new treatment approaches or treatment targets. [ncbi.nlm.nih.gov]

Prognosis

The prognosis was poor with 48% demonstrating a visual acuity of LP or NLP at the final follow-up. [ncbi.nlm.nih.gov]

S. marcescens endophthalmitis has a poor visual prognosis and may show an in vivo clinical resistance to antibiotic therapy regardless of in vitro culture sensitivities. [journals.lww.com]

Vision prognosis is often poor, even with early and appropriate treatment. Patients whose vision at presentation is count-fingers or worse should be considered for vitrectomy and use of intraocular corticosteroids. [msdmanuals.com]

Etiology

METHODS: All cases diagnosed as endophthalmitis of any etiology and undergoing treatment which progressed to panophthalmitis from January 2005 to December 2015 were included. [ncbi.nlm.nih.gov]

Infectious endophthalmitis can have either an exogenous (following ocular surgery/penetrating trauma) or endogenous (hematogenous spread) etiology. [amboss.com]

Etiology Bacterial endophthalmitis has been classified as exogenous or endogenous depending on the cause. [radiopaedia.org]

Epidemiology

The epidemiology of the disease is very different in Scandinavia compared to Asia. The visual prognosis remains grave and the majority of the eyes lose useful vision. [ncbi.nlm.nih.gov]

An epidemiologic investigation by the Thai Field Epidemiology Training Program included a retrospective review of hospital records of all patients who had had cataract operations (predominantly ECCEs) in 1992, a case-control study to determine risk factors [cdc.gov]

There are unexpected gems such as an excellent chapter on epidemiology. [nature.com]

Discussion of Epidemiology and Treatment: The incidence of post cataract surgery endophthalmitis has varied over the past century. [eyerounds.org]

Pathophysiology

In fact, a number of studies have specifically looked at the pathophysiology of this particular infection. [joii-journal.springeropen.com]

Introduction Overview intraocular bacterial or fungal infection Epidemiology risk factors ocular trauma eye surgery keratitis extending into the eye systemic infection Pathophysiology ocular trauma or eye surgery bacterial of fungal introduction within [step2.medbullets.com]

Pathophysiology Under normal circumstances, the blood-ocular barrier provides a natural resistance against invading organisms. [emedicine.com]

Pathophysiology Normally, the blood-ocular barrier prevents invasion from infective organisms but if this is breached (directly through trauma or indirectly due to a change in its permeability secondary to inflammation), infection can occur. [patient.info]

Prevention

Systematic collection of data and periodic evaluation of the current practice against the new evidence are necessary to prevent or treat postcataract surgery endophthalmitis. [ncbi.nlm.nih.gov]

Therefore, we conducted a systematic review and meta-analysis on the effects of antibioprophylaxis in intravitreal injections in the prevention of endophthalmitis. [journals.plos.org]

References

  1. Vaziri K, Schwartz SG, Kishor K, Flynn HW Jr. Endophthalmitis: state of the art. Clin Ophthalmol. 2015;9:95-108
  2. Safneck JR. Endophthalmitis: A review of recent trends. Saudi J Ophthalmol. 2012;26(2):181-189.
  3. Kernt M, Kampik A. Endophthalmitis: Pathogenesis, clinical presentation, management, and perspectives. Clin Ophthalmol. 2010;4:121-135.
  4. Durand ML. Endophthalmitis. Clin Microbiol Infect. 2013;19(3):227-234.
  5. Sadiq MA, Hassan M, Agarwal A, et al. Endogenous endophthalmitis: diagnosis, management, and prognosis. J Ophthalmic Inflamm Infect. 2015;5:32.
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