Optic disc morphology in congenital glaucoma

Area of Science:

• Ophthalmology
• Pediatric Ophthalmology
• Glaucoma Research

Background:

• Congenital glaucoma (CG) is a severe form of glaucoma presenting in infancy.
• Optic disc morphology is crucial for diagnosing and monitoring glaucoma.
• Understanding optic disc changes in CG is vital for early intervention.

Purpose of the Study:

• To compare optic disc morphology (size, tilt, torsion) in children with congenital glaucoma (CG) versus healthy controls.
• To investigate the relationship between axial length, optic disc area, tilt, and torsion in CG.
• To differentiate optic disc characteristics between primary congenital glaucoma (PCG) and Axenfeld-Rieger Malformation (ARM).

Main Methods:

• Cross-sectional study involving children with CG (PCG and ARM) and age/gender-matched healthy controls.
• Fundus photography and scanning laser ophthalmoscopy were used for analysis.
• Image J software quantified optic disc tilt and torsion; axial length and optic disc area were measured and correlated.

Main Results:

• No significant differences in optic disc area, tilt, or torsion were found between PCG eyes and healthy controls.
• Axial length was significantly greater in PCG eyes compared to controls and correlated with optic disc area.
• Eyes with Axenfeld-Rieger Malformation showed significantly higher disc torsion than controls.

Conclusions:

• Optic disc morphology in children with primary congenital glaucoma is not significantly different from healthy individuals, despite axial elongation.
• Axial elongation is a prominent feature in PCG eyes.
• Disc torsion may be a distinguishing feature in Axenfeld-Rieger Malformation-associated glaucoma.