Correlation between optical coherence tomography and glaucomatous optic nerve head damage in children

Area of Science:

• Ophthalmology
• Medical Imaging
• Paediatric Glaucoma Research

Background:

• Glaucoma diagnosis in children presents unique challenges.
• Optical coherence tomography (OCT) and optic nerve head (ONH) stereophotography are key diagnostic tools.

Purpose of the Study:

• To compare the diagnostic capabilities of OCT (macular and RNFL thickness) with ONH morphology assessed by stereophotography in paediatric glaucoma.
• To evaluate the correlation between OCT findings and glaucoma severity graded from ONH stereophotographs.

Main Methods:

• A prospective observational case-control study involving 139 eyes of 139 children (ages 4-17) with normal or glaucomatous eyes.
• Stratus OCT was used to obtain macular and RNFL thickness maps.
• ONH stereophotographs were graded (0-5) by masked observers based on cupping and morphology.

Main Results:

• A significant negative correlation was found between ONH grade and both macular thickness and peripapillary RNFL thickness.
• This correlation was observed across all measured areas.
• Differences in correlation were noted between black and white children.

Conclusions:

• OCT measurements of RNFL and macular thickness decrease as glaucomatous damage on ONH stereophotography increases in paediatric patients.
• These findings suggest OCT is valuable for assessing glaucoma progression in children.
• Further research is needed to fully quantify OCT's role in diagnosing and managing paediatric glaucoma.