Related Experiment Video
Updated: Jul 7, 2025

A Metadata Extraction Approach for Clinical Case Reports to Enable Advanced Understanding of Biomedical Concepts
Published on: September 20, 2018
Definition and Diagnostic Criteria for Pediatric Blepharokeratoconjunctivitis
Nallely R Morales-Mancillas1, Fabiola Velazquez-Valenzuela2, Shigeru Kinoshita3
1Tecnologico de Monterrey, School of Medicine and Health Sciences, Institute of Ophthalmology and Visual Sciences, Pediatric and Strabismus Service, Monterrey, Mexico.
Insights
Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic eye condition. Experts established a unified name, definition, and diagnostic criteria to improve early recognition and treatment of this sight-threatening disease in children.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Ocular Surface Disease
Background:
- Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic, sight-threatening inflammatory ocular surface disease.
- Lack of unified terminology and diagnostic criteria leads to underdiagnosis and delayed treatment.
- Nonspecific symptoms and difficulty differentiating from similar conditions complicate PBKC diagnosis.
Purpose of the Study:
- To establish a consensus on the nomenclature, definition, and diagnostic criteria for PBKC.
- To provide a unified framework for identifying and managing pediatric blepharokeratoconjunctivitis.
- To reduce diagnostic confusion and improve early detection of PBKC.
Main Methods:
- Quality improvement study utilizing the non-RAND modified Delphi method.
- Expert panel consensus achieved through electronic surveys and virtual meetings.
- International panelists included pediatric ophthalmologists and cornea specialists.
Main Results:
- Consensus reached on the name "pediatric blepharokeratoconjunctivitis."
- Agreed-on definition: a chronic, recurrent inflammatory eyelid margin disease with ocular surface involvement in children and adolescents.
- Diagnostic criteria established, including symptoms and signs from eyelid margin, conjunctiva, and cornea.
Conclusions:
- Agreed-upon nomenclature and diagnostic criteria aim to reduce diagnostic confusion.
- Early recognition and adequate therapy can prevent sight-threatening complications of PBKC.
- Proposed criteria require further validation with real patient data.
Importance:
Pediatric blepharokeratoconjunctivitis (PBKC) is a chronic, sight-threatening inflammatory ocular surface disease. Due to the lack of unified terminology and diagnostic criteria, nonspecific symptoms and signs, and the challenge of differentiation from similar ocular surface disorders, PBKC may be frequently unrecognized or diagnosed late.
Objective:
To establish a consensus on the nomenclature, definition, and diagnostic criteria of PBKC.
Design, Setting, And Participants:
This quality improvement study used expert panel and agreement applying the non-RAND modified Delphi method and open discussions to identify unified nomenclature, definition, and definitive diagnostic criteria for PBKC. The study was conducted between September 1, 2021, and August 14, 2022. Consensus activities were carried out through electronic surveys via email and online virtual meetings.
Results:
Of 16 expert international panelists (pediatric ophthalmologists or cornea and external diseases specialists) chosen by specific inclusion criteria, including their contribution to scientific leadership and research in PBKC, 14 (87.5%) participated in the consensus. The name proposed was "pediatric blepharokeratoconjunctivitis," and the agreed-on definition was "Pediatric blepharokeratoconjunctivitis is a frequently underdiagnosed, sight-threatening, chronic, and recurrent inflammatory eyelid margin disease associated with ocular surface involvement affecting children and adolescents. Its clinical spectrum includes chronic blepharitis, meibomitis, conjunctivitis, and corneal involvement ranging from superficial punctate keratitis to corneal infiltrates with vascularization and scarring." The diagnostic criteria included 1 or more suggestive symptoms accompanied by clinical signs from 3 anatomical regions: the eyelid margin, conjunctiva, and cornea. For PBKC suspect, the same criteria were included except for corneal involvement.
Conclusions And Relevance:
The agreements on the name, definition, and proposed diagnostic criteria of PBKC may help ophthalmologists avoid diagnostic confusion and recognize the disease early to establish adequate therapy and avoid sight-threatening complications. The diagnostic criteria rely on published evidence, analysis of simulated clinical cases, and the expert panel's clinical experience, requiring further validation with real patient data analysis.
Related Concept Videos
Accessory Structures of the Eye
Glaucoma: Overview
Photoreceptors and Visual Pathways
Oppositional Defiant Disorder
Diagnostic Criteria and...

