Visual deprivation and axial myopia: Considerations on long-term ocular development

Area of Science:

• Ophthalmology
• Developmental Biology
• Optometry

Background:

• Severe infantile visual deprivation can alter ocular development.
• This can result in significant differences in axial length (AL) between eyes.
• Adults with monocular infantile visual deprivation show substantial AL interocular differences.

Purpose of the Study:

• To explore the impact of early visual deprivation on axial length (AL).
• To investigate potential implications for myopia progression.

Main Methods:

• Case report of three adult male patients with infantile monocular visual deprivation.
• Evaluations included refractive assessment, biomicroscopy, fundus examination, electroretinogram (ERG), and A-Scan ultrasound.
• Axial length (AL) measurements compared affected and healthy eyes.

Main Results:

• Affected eyes had severe visual impairment and could not be fully examined.
• Electroretinogram (ERG) findings were within normal limits.
• Axial length (AL) measurements showed a 5.8-6.3 mm increase in affected eyes compared to healthy eyes.

Conclusions:

• Severe infantile visual deprivation leads to significant interocular AL differences in adulthood.
• Further investigation into underlying mechanisms is crucial.
• This research aids in understanding and managing myopia progression in affected individuals.