Features of the Choroidal Structure in Children With Anisometropic Amblyopia

Area of Science:

• Ophthalmology
• Pediatric Ophthalmology
• Retinal Imaging

Background:

• Anisometropic amblyopia is a common cause of reduced vision in children.
• Choroidal structure plays a role in visual development and function.
• Understanding choroidal changes in amblyopia can inform treatment strategies.

Purpose of the Study:

• To investigate choroidal structure in children diagnosed with anisometropic amblyopia.
• To utilize the binarization method for detailed choroidal analysis.
• To compare choroidal parameters between amblyopic, fellow, and control eyes.

Main Methods:

• Thirty children with unilateral anisometropic amblyopia and 30 healthy controls were enrolled.
• Optical coherence tomography (OCT) was used to measure choroidal thickness.
• The binarization method with ImageJ software quantified total choroidal area, stromal area, luminal area, luminal area to stromal area ratio, and choroidal vascular index (CVI).

Main Results:

• Amblyopic eyes exhibited a significantly larger total choroidal area compared to control eyes.
• Luminal area to stromal area ratio and choroidal vascular index (CVI) were significantly lower in both amblyopic and fellow eyes versus controls.
• No significant correlation was found between CVI and axial length, anterior chamber depth, or central corneal thickness.

Conclusions:

• Children with anisometropic amblyopia demonstrate altered choroidal morphology, characterized by a larger overall choroidal area.
• Reduced CVI in both amblyopic and fellow eyes suggests impaired choroidal vascularization.
• These findings highlight potential structural differences in the choroid associated with anisometropic amblyopia.