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BACKGROUND Parinaud oculoglandular syndrome is a unilateral granulomatous palpebral conjunctivitis associated with preauricular, submandibular, and cervical lymphadenopathies. Several infectious diseases can cause Parinaud oculoglandular syndrome, usually with a conjunctival entry. The most common underlying pathology is cat scratch disease, followed by the oculoglandular form of tularemia. Diagnosis is usually a serious challenge as these infections are themselves rare. On the other hand, Parinaud oculoglandular syndrome may be a rare manifestation of more common disorders (eg, tuberculosis, syphilis, mumps, herpes simplex and Epstein-Barr virus, adenovirus, Rickettsia, Sporothrix, Chlamydia infections). CASE REPORT We present the case of a 66-year-old man with granulomatous conjunctivitis and ipsilateral preauricular, submandibular, and upper cervical lymphadenopathies following a superficial corneal injury. Although the systematic amoxicillin/clavulanic acid and metronidazole antibiotic therapy started immediately at admission, the suppuration of the lymph nodes required surgical drainage. Based on his anamnesis (sheep breeding; a twig scratching his eye 2 days before the initial attendance) and symptoms, a zoonosis, namely the oculoglandular form of tularemia, was suspected, empiric ciprofloxacin therapy was administered, and the patient recovered without sequelae. The Francisella tularensis infection was eventually confirmed by microagglutination serologic assay. CONCLUSIONS If Parinaud oculoglandular syndrome is diagnosed and cat scratch fever as the most common etiology is not likely, other zoonoses, especially the oculoglandular form of tularemia, should be suspected. Serology is the most common laboratory method of diagnosing tularemia. Empiric fluoroquinolone (ciprofloxacin) or aminoglycoside (gentamicin or streptomycin) antibiotic therapy should be started immediately at the slightest suspicion of oculoglandular tularemia.

This cohort study examines ambulatory care revisits and same-day topical antibiotic prescription in insured patients with acute infectious conjunctivitis.

Among surveyed households, the transmission rate of pediatric conjunctivitis was 12%. Rates did not differ when the index child did or did not use an ophthalmic antibiotic (14% vs 11% [P = 0.6]). Transmission rates were lower than for other infections where children are not routinely excluded from school or daycare.

BACKGROUND: Infectious conjunctivitis affects 1 in 8 children annually, resulting in high ophthalmic antibiotic prescribing and absenteeism from childcare and school. We aimed to quantify the cost-effectiveness and annual savings of 3 evidence-based approaches to conjunctivitis management and return to childcare and school compared to usual care.
METHODS: Using a decision analytic model from a societal perspective over a 1-year time horizon, we conducted a cost-effectiveness analysis of 3 management strategies for children aged 6 months to 17 years with non-severe conjunctivitis compared to usual care in the United States. Strategies accounted for rate of transmission. Strategies included (1) refraining from prescribing ophthalmic antibiotics for non-severe conjunctivitis, (2) allowing children without systemic symptoms to attend childcare and school, (3) and the combined approach of refraining from prescribing ophthalmic antibiotics and allowing children without systemic symptoms to attend childcare and school.
RESULTS: The estimated annual expenditure for pediatric conjunctivitis was $1.95 billion. Usual care was the most expensive ($212.73/episode), followed by refraining from ophthalmic antibiotic prescribing ($199.92) and allowing children without systemic symptoms to attend childcare and school ($140.18). The combined approach was the least costly ($127.38). Disutility was similar between approaches (quality-adjusted life days 0.271 vs 0.274). Refraining from antibiotic prescribing and the combination approach were dominant compared to usual care. The combined approach resulted in an estimated $783 million annual savings and 1.6 million ophthalmic antibiotic courses averted.
CONCLUSIONS: Conjunctivitis poses an economic burden that could be reduced by refraining from ophthalmic antibiotic use and allowing children without systemic symptoms to remain at school or childcare.

Transmission rates among children with conjunctivitis were low and antibiotic use was not associated with reduced transmission. Policies recommending exclusion from daycare and school for conjunctivitis should be scrutinized as they may not reduce transmission and may increase unnecessary antibiotic use.

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Keratin has the potential to function as the gel matrix in an ophthalmic formulation for the encapsulation of the macrolide antibiotic azithromycin. The quality of this formulation was thoroughly evaluated through various analyses, such as in vitro release assessment, rheological examination, intraocular retention studies in rabbits, assessment of bacteriostatic efficacy, and safety evaluations. It is worth mentioning that the gel demonstrated shear thinning properties and exhibited characteristics of an elastic solid, thereby confirming its structural stability. The gel demonstrated a notable affinity for mucosal surfaces in comparison to traditional azithromycin aqueous solutions. In vitro release testing revealed that drug release transpired via diffusion mechanisms, following a first-order kinetic release pattern. Additionally, the formulated gel exhibited remarkable antibacterial efficacy against Staphylococcus aureus and Pseudomonas aeruginosa in bacteriostatic evaluations. Lastly, safety assessments confirmed that the gel eye drops induced minimal irritation and displayed no apparent cytotoxicity, indicating their good safety and biocompatibility for ocular application. Thus, these findings indicated that the prepared azithromycin gel eye drops complied with the requisite standards for ophthalmic preparations.

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Streptococcus pyogenes (group A beta-hemolytic Streptococcus, GABHS) causes a range of human infections, including necrotizing fasciitis and toxic shock syndrome, because it produces exotoxins that damage host cells, facilitate immune evasion, and serve as T cell superantigens. GABHS conjunctivitis is rare. We report a case of membranous conjunctivitis in a 3-year-old child who was treated with a combination of targeted bactericidal antimicrobials, toxin-synthesis inhibition, and amniotic membrane transplantation.