Corneal Biomechanics - an Emerging Ocular Property with a Significant Impact

Area of Science:

• Ophthalmology and Vision Science
• Biomedical Engineering
• Ocular Biomechanics

Background:

• Corneal biomechanical properties are vital for understanding ocular pathology and disease progression.
• These properties are increasingly correlated with refractive errors, glaucoma, and corneal ectasias.
• Significant morphological and biomechanical differences exist between myopic and emmetropic eyes, particularly in children.

Discussion:

• Lower corneal hysteresis (CH) and corneal resistance factor (CRF) are observed in pediatric myopes, correlating with central corneal thickness and axial length.
• In glaucoma, low CH is linked to high intraocular pressure (IOP), with lower CH in primary open-angle glaucoma (POAG) versus ocular hypertension (OHT).
• Corneal biomechanics are severely affected in keratoconus, with reduced CH and CRF compared to healthy eyes.

Key Insights:

• Corneal hysteresis (CH) and corneal resistance factor (CRF) are significantly lower in myopic children.
• A low CH is associated with high intraocular pressure (IOP) and is lower in primary open-angle glaucoma (POAG) than ocular hypertension (OHT).
• Corneal biomechanical parameters are severely impacted in keratoconus.

Outlook:

• Ongoing research into corneal biomechanics promises more efficient disease diagnosis and targeted treatments.
• Understanding corneal behavior is key to managing ocular pathologies and optimizing refractive surgery outcomes.
• Personalized medicine approaches in ophthalmology will increasingly leverage biomechanical data.