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Induction of Ocular Surface Inflammation and Collection of Involved Tissues
Published on: August 4, 2022
Pediatric blepharokeratoconjunctivitis: A challenging ocular surface disease
Gustavo Ortiz-Morales1, Raul E Ruiz-Lozano1, Nallely R Morales-Mancillas1
1Tecnologico de Monterrey, School of Medicine and Health Sciences, Institute of Ophthalmology and Visual Sciences, Monterrey, Mexico.
Insights
Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic eye condition in children often diagnosed late. New criteria aim for earlier detection and treatment to prevent vision loss.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Immunology
Background:
- Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic ocular inflammatory condition in children.
- It is often underdiagnosed, leading to potential severe visual impairment and amblyopia.
- Previous research suggests a role for the adaptive immune system and bacterial products in PBKC pathogenesis.
Purpose of the Study:
- To compile current evidence on PBKC, including epidemiology, pathophysiology, and clinical presentation.
- To present recently established diagnostic criteria for PBKC to improve early and precise diagnosis.
- To review current management strategies and highlight the need for further research into pathogenic mechanisms.
Main Methods:
- A comprehensive review of existing literature on pediatric blepharokeratoconjunctivitis.
- Analysis of expert panel consensus on PBKC definition and diagnostic criteria.
- Synthesis of information on clinical features, diagnostic approaches, and therapeutic interventions.
Main Results:
- PBKC is characterized by recurrent chalazia, blepharitis, meibomian gland dysfunction, conjunctival hyperemia, phlyctenules, and corneal infiltrates.
- New diagnostic criteria aim to standardize identification and reduce diagnostic delays.
- Corneal scarring is a significant cause of visual loss and amblyopia in affected children.
Conclusions:
- Standardized diagnostic criteria and increased awareness are crucial for early PBKC detection.
- Prompt and adequate treatment can help control inflammation and prevent corneal complications.
- Further research into PBKC's underlying mechanisms may reveal novel therapeutic targets.
Abstract:
Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic and recurrent ocular surface inflammatory disorder affecting children in early life. It is frequently under- or late- diagnosed, representing a potential cause of severe visual morbidity worldwide. An expert panel consensus recently agreed on its definition and proposed diagnostic criteria for suspected and definitive PBKC to reduce confusion and avoid varied terminology previously used in the literature, improving early and precise diagnosis. Previous evidence has pointed to the role of the adaptive immune system in recognizing and handling antigenic eyelid bacterial products, particularly from the cell wall, and the direct toxic and inflammatory effects of their cytolytic exotoxins on the ocular surface. PBKC is a frequent referral in pediatric and cornea clinics characterized by a history of recurrent chalazia, blepharitis, meibomian gland dysfunction, conjunctival hyperemia, phlyctenules formation, and corneal infiltrates with vascularization and scarring. The latter is a major cause of significant visual loss and amblyopia. Current treatment strategies aim to control inflammation on the ocular surface, halt disease progression, and avoid corneal involvement. Further research on pathogenic mechanisms will shed light on novel potential therapeutic strategies. Awareness of PBKC should enhance early diagnosis, prompt adequate treatment, and improve outcomes. We compile current evidence on epidemiology, pathophysiology, clinical spectrum of disease, diagnostic criteria, and management strategies for PBKC.
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