Relationship Between Scheimpflug-Based Ocular Biomechanics and Myopia Progression in Adolescents

Area of Science:

• Ophthalmology
• Biometry
• Ocular biomechanics

Background:

• Adolescent eye growth and refractive status are influenced by ocular biomechanics.
• Understanding the relationship between ocular biomechanics and eye elongation is crucial for myopia progression assessment.

Purpose of the Study:

• To describe the progression of axial and segmental ocular biometric lengths and refractive status in adolescents.
• To investigate independent associations between changes in ocular biometry and baseline ocular biomechanics.

Main Methods:

• Prospective cohort study of 126 eyes from 63 adolescents over 2.5 years.
• Ocular biometry, refraction, and biomechanics measured at baseline and follow-up.
• Multivariable regression models used to correlate baseline biomechanics with changes in axial length, vitreous cavity length, and spherical equivalent.

Main Results:

• Adolescents showed mean increases in axial length (0.122 mm) and vitreous cavity length (0.092 mm), with a mean myopic shift of -0.32 D.
• Biomechanically corrected intraocular pressure (bIOP), Integrated Radius (IR), and A2 Deflection Area (A2DArea) were associated with axial length and vitreous cavity length changes.
• IR and WholeEyeMovementMaxTime (MaxWEMT) were associated with spherical equivalent changes.

Conclusions:

• Ocular biomechanical behavior is independently associated with ocular elongation and myopic progression in adolescents.
• Parameters like bIOP, IR, and MaxWEMT may be key indicators for assessing the risk of myopia progression.
• Studying ocular biomechanics is vital for risk assessment of ocular elongation and myopic progression.