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Early corneal and optic nerve changes in a paediatric population affected by obstructive sleep apnea syndrome
Erika Bonacci1, Adriano Fasolo1, Marco Zaffanello2
1Eye Clinic, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Pz.Le LA Scuro 10, 37100, Verona, VR, Italy.
Insights
Pediatric obstructive sleep apnea syndrome (OSAS) is linked to early changes in the cornea and optic nerve. These findings suggest potential precursors to adult eye complications associated with OSAS.
Area of Science:
- Ophthalmology
- Pediatrics
- Sleep Medicine
Background:
- The link between Obstructive Sleep Apnea Syndrome (OSAS) and eye diseases is established in adults.
- Data on ocular manifestations in pediatric OSAS are scarce and conflicting.
Purpose of the Study:
- To investigate early corneal, macular, and optic nerve changes in children diagnosed with OSAS.
- To identify potential precursors to adult ocular complications associated with OSAS.
Main Methods:
- Prospective study of children aged ≥4 years with suspected OSAS.
- Diagnosis of OSAS based on respiratory polygraphy (Apnea-Hypopnea Index > 1).
- Comprehensive eye examinations including corneal tomography and optical coherence tomography.
Main Results:
- Statistically significant differences in corneal asymmetry and thinnest corneal thickness between OSAS and non-OSAS groups.
- Elevated average and nasal quadrant retinal nerve fibre layer thickness in children with OSAS.
- Prevalence of OSAS was 48.6% in the study cohort.
Conclusions:
- Children newly diagnosed with OSAS exhibit early corneal and optic nerve alterations.
- These findings may indicate preclinical signs of ocular disease in pediatric OSAS.
- Comprehensive eye screening is valuable for children with OSAS.
Purpose:
The relation between OSAS and eye diseases is well known in adults, while very few and contradictory data can be found regarding paediatric ages. The aim of this study is to explore the early corneal, macular and optic nerve changes in paediatric patients with OSAS.
Methods:
Prospective study that enrolled children aged ≥ 4 years referred to the Paediatric Pneumology Clinic in Verona for suspected obstructive sleep apnoea syndrome (OSAS) and investigated with the overnight respiratory polygraphy. Patients with apnoea-hypopnea index (AHI) > 1 were classified as OSAS, while those with AHI < 1 were classified non-OSAS. All patients underwent comprehensive eye examination including slit lamp, refraction, intraocular pression (Goldman applanation tonometry), corneal tomography (corneal astigmatism, corneal keratometry at the apex, surface asymmetry index, central corneal thickness and thinnest corneal thickness) and optical coherence tomography (central macular thickness, macular volume and retinal nerve fibre layer).
Results:
Seventy-two children were enrolled in the study. The overall prevalence of OSAS was 48.6%. Statistically significant differences were found between OSAS and non-OSAS group for corneal asymmetry (0.9 ± 0.5 and 0.6 ± 0.3, respectively; p = 0.02), thinnest corneal thickness (551.8 ± 33.9 and 563.7 ± 32.5; p = 0.04), average retinal nerve fibre layer (102.8 ± 10.5 µm and 98.1 ± 12.3 µm; p = 0.012) and in nasal quadrant (76.2 ± 15.4 µm and 66.5 ± 12.6 µm; p = 0.0002).
Conclusions:
A comprehensive eye examination with corneal and optic nerve imaging showed early corneal and optic nerve changes in children newly diagnosed with OSAS. These could be prelude of the known ocular manifestations associated with OSAS in adult patients.
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