CAN Optical Coherence Tomography redefine amblyopia?

Area of Science:

• Ophthalmology
• Neuroscience
• Medical Imaging

Background:

• Amblyopia was historically considered a functional visual disorder without identifiable organic causes.
• Optical Coherence Tomography (OCT) provides new insights into amblyopia's etiopathology by revealing retinal morphologic anomalies.
• Understanding the structural basis of amblyopia is crucial for diagnosis and treatment.

Purpose of the Study:

• To systematically analyze macular thickness, optic nerve changes, and choroidal thickness in patients with amblyopia.
• To synthesize findings from existing literature on OCT-based evaluations of amblyopia.
• To identify common structural alterations associated with amblyopia.

Main Methods:

• A comprehensive literature review of 30 clinical trials published between 2006 and 2016.
• Studies were identified through the PubMed database.
• Analysis focused on OCT findings related to macular, optic nerve, and choroidal structures in amblyopic eyes.

Main Results:

• The majority of studies (19) investigated macular and optic nerve changes, while others focused on choroidal (7) and retinal changes (6).
• Variability in results was observed across studies.
• Macular and choroidal involvement appeared more frequently suggested than optic nerve involvement in amblyopia.

Conclusions:

• OCT demonstrates morphologic anomalies in the retina of amblyopic eyes.
• Macular and choroidal alterations are more consistently implicated in amblyopia than optic nerve changes.
• Further research is needed to clarify the complex structural changes in amblyopia.