Evaluation of choroidal thickness in amblyopia using optical coherence tomography

Area of Science:

• Ophthalmology
• Pediatric eye conditions
• Optical coherence tomography

Background:

• Amblyopia, or 'lazy eye', affects visual development in children.
• Choroidal thickness is a potential indicator of ocular health and development.

Purpose of the Study:

• To investigate choroidal thickness variations in children diagnosed with amblyopia.
• To compare choroidal thickness between amblyopic, fellow, and healthy control eyes.

Main Methods:

• Spectral-domain optical coherence tomography (SD-OCT) was used for measurements.
• Choroidal thickness was measured at the subfoveal area and 12 other points.
• 31 children with unilateral amblyopia and 31 controls were included.

Main Results:

• Amblyopic eyes showed significantly thicker subfoveal choroids compared to control eyes.
• Significant differences in choroidal thickness were noted at subfoveal, N1, and S1 locations.
• A negative correlation between subfoveal choroidal thickness and axial length was observed in amblyopic eyes.

Conclusions:

• The subfoveal choroid is significantly thicker in amblyopic eyes compared to controls.
• Choroidal thickness varied across different regions, being thickest centrally and thinnest nasally.
• These findings indicate structural alterations in the choroid associated with amblyopia.