Retinal detachment following meningococcal endophthalmitis

Menigococcal endophthalmitis: A rare cause of endogenous endophthalmitis

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Neisseria Meningitidis is a rare cause of endogenous endophthalmitis, which is potentially severe.

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Meningococcal endophthalmitis is a disease that may provoke sequels such as loss of visual acuity and retinal detachment

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uspiction is necessary to make a diagnostic and perform an early antimicrobial treatment, thus reducing complications.

Neisseria meningitidis is a rare but severe cause of endogenous endophthalmitis. We report a case of a 46-year-old woman who presented an endophthalmitis secondary to an infection by Neisseria meningitidis that caused with meningitis. She was treated with corticosteroids and systemic and topical antimicrobials, but she presented loss of visual acuity as a consequence. We also review the cases reported in medical literature, and find out that 75.7 % of patients presented diverse complications. The prevalence of complications is higher in patients who received local treatment in combination with antibiotics. Patients who received corticosteroids as treatment presented a similar rate of complications than patients who did not.

Atypical, Yet Not Infrequent, Infections with Neisseria Species

Neisseria species are extremely well-adapted to their mammalian hosts and they display unique phenotypes that account for their ability to thrive within niche-specific conditions. The closely related species N. gonorrhoeae and N. meningitidis are the only two species of the genus recognized as strict human pathogens, causing the sexually transmitted disease gonorrhea and meningitis and sepsis, respectively. Gonococci colonize the mucosal epithelium of the male urethra and female endo/ectocervix, whereas meningococci colonize the mucosal epithelium of the human nasopharynx. The pathophysiological host responses to gonococcal and meningococcal infection are distinct. However, medical evidence dating back to the early 1900s demonstrates that these two species can cross-colonize anatomical niches, with patients often presenting with clinically-indistinguishable infections. The remaining Neisseria species are not commonly associated with disease and are considered as commensals within the normal microbiota of the human and animal nasopharynx. Nonetheless, clinical case reports suggest that they can behave as opportunistic pathogens. In this review, we describe the diversity of the genus Neisseria in the clinical context and raise the attention of microbiologists and clinicians for more cautious approaches in the diagnosis and treatment of the many pathologies these species may cause.

Endogenous methicillin-resistant Staphylococcus aureus endophthalmitis after leg trauma

We present a case of endogenous endophthalmitis in a 13-year-old boy with methicillin-resistant Staphylococcus aureus sepsis. The patient underwent magnetic resonance imaging of the brain after intermittent anisocoria was noted on examination, leading to a diagnosis of endophthalmitis with a chorodial abscess.

Neisseria meningitidis endogenous endophthalmitis with meningitis in an immunocompetent child

Neisseria meningitidis is a major cause of childhood morbidity and mortality worldwide. We describe an exceptional case of an immunocompetent 15-month-old child presenting with a unilateral anterior uveitis, hypopyon, and sepsis. Anterior chamber aspirate demonstrated gram-negative cocci before Neisseria meningitidis was identified in blood and cerebrospinal fluid. Meningococcal endophthalmitis presents variably with sepsis, meningitis, or isolated ocular symptoms. Diagnosis is a clinical challenge, requiring diagnostic sampling and treatment from both pediatricians and ophthalmologists. Delayed or incorrect treatment risks blindness, disability, or death. Simultaneous invasion of meningococcus across intact blood-brain and blood-ocular barriers in this child suggests antigenic correlates between meningeal and ocular endothelial interfaces. Meningococcus is an exclusively human pathogen; research is hampered by the lack of animal models. This clinical observation suggests the potential of a novel in vitro experimental approach of using ocular tissue from eye banks to further elucidate the meningococcal-endothelial interaction that underpins meningococcal disease.