[Hemodynamic changes in myopia of different degrees]

Area of Science:

• Ophthalmology
• Medical Physiology
• Biomedical Engineering

Background:

• Myopia, a common refractive error, is associated with changes in ocular structures.
• Understanding ocular hemodynamics is crucial for managing myopia progression and related complications.

Purpose of the Study:

• To investigate the relationship between the degree of myopia, axial length, and ocular blood flow parameters.
• To assess volumetric and velocity parameters of ocular blood flow in myopic patients.

Main Methods:

• Involved 78 patients (143 eyes) with varying degrees of myopia (low, medium, high).
• Standard ophthalmological tests were complemented by flowmetry and duplex ultrasound of ocular vessels.
• Evaluated regional blood flow, including volumetric and velocity parameters.

Main Results:

• A progressive decrease in ocular blood flow parameters was observed with increasing anterior-posterior axis length.
• The findings indicate a correlation between myopia severity and reduced ocular hemodynamics.

Conclusions:

• Increased axial length in myopia is associated with diminished ocular blood flow.
• These findings may have implications for understanding the pathophysiology of myopia and its complications.