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Updated: Jun 25, 2026

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Published on: July 10, 2018
Incidence and risk factors of corneal epithelial defects in mechanically ventilated children
Eliane M Germano1, Maria Julia G Mello, Dayse Figueredo Sena
1Instituto Materno Infantil Prof. Fernando Figueira, Recife, Brazil.
Insights
A significant number of children on mechanical ventilation (MV) developed corneal defects, with open eyes and sepsis being key risk factors. Early detection within the first week of MV is crucial for managing these eye complications.
Area of Science:
- Ophthalmology
- Pediatric Intensive Care
- Critical Care Medicine
Background:
- Mechanical ventilation (MV) is a critical intervention for critically ill children.
- Corneal defects are a potential complication in patients requiring intensive care.
- Understanding risk factors for corneal defects in pediatric patients on MV is essential for prevention and management.
Purpose of the Study:
- To determine the incidence of corneal defects in children undergoing mechanical ventilation.
- To identify the primary risk factors associated with the development of corneal defects in this population.
Main Methods:
- A cohort study evaluated 53 children exposed to mechanical ventilation.
- Daily corneal evaluations were performed using fluorescein testing and a portable slit lamp.
- Multivariate logistic regression analysis identified prognostic factors for corneal defects.
Main Results:
- Twenty-five percent of children on MV developed corneal defects.
- Defects were often bilateral (54%) and frequently occurred within the first week (69%) or 48 hours (46%) of ventilation.
- Open eyes and sepsis were identified as significant risk factors in multivariate analysis.
Conclusions:
- The incidence of corneal defects in pediatric patients on MV is high (25%).
- Maintaining open eyes and the presence of sepsis are significant risk factors for corneal defects.
- Findings are consistent with observations in adult patients requiring mechanical ventilation.
Objective:
To determine the incidence of corneal defects and the main risk factors in children exposed to mechanical ventilation (MV) in the pediatric intensive care unit between March 28 and November 4, 2001.
Methods:
A cohort study where characteristics of 53 children exposed to MV were evaluated and risk factors relating to the occurrence of corneal defects were identified. Patients' corneas were evaluated on a daily basis using a fluorescein test and a portable slit lamp. Risk ratios and 95% confidence intervals were calculated. A multiple logistic regression analysis was performed using a nonconditional model. The model selects variables that maintain associations with corneal defects at a 5% level of significance. The variables with the highest predictive value were identified.
Results:
Twenty-five percent of children exposed to MV developed corneal defects. From this percent, almost 54% of the defects occurred in both eyes, and 46% in the left eye alone. Most defects (69%) were detected within the first week of MV, and a large number were detected within the first 48 hours (46% of cases). In those children who exhibited failure of at least one organ in addition to the lungs, 43% developed defects. Among the children who died, 44% showed corneal defects. After adjusting for potential confounding variables in the multivariate analysis, the maintenance of opened eyes and sepsis remained as prognostic factors for corneal defects.
Conclusions:
A high incidence (25%) of corneal defects was found in children exposed to MV, as is also observed with adult patients. The main risk factors associated with corneal defects were the maintenance of opened eyes and the presence of sepsis.
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