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Related Experiment Video

Updated: Jun 3, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

[Corneal higher order aberrations and their changes with aging].

S Cermáková¹, S Skorkovská

¹Klinika nemocí ocních a optometrie LF MU a Fakultní nemocnice u svaté Anny, Brno. cermakovas@fnusa.cz

Ceska a Slovenska Oftalmologie : Casopis Ceske Oftalmologicke Spolecnosti a Slovenske Oftalmologicke Spolecnosti

|March 22, 2011

Summary

Corneal higher order aberrations, particularly spherical aberration and coma, increase with age in healthy individuals. These changes, mainly driven by the anterior corneal surface, impact vision quality in older adults.

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$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

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Published on: September 16, 2025

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Last Updated: Jun 3, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter

Published on: September 16, 2025

Area of Science:

Ophthalmology and Vision Science
Biomedical Optics

Context:

The cornea is the primary refractive surface of the eye, significantly influencing visual quality.
Corneal aberrations, especially higher-order aberrations (HOAs), can degrade vision.
Understanding age-related changes in corneal HOAs is crucial for ophthalmic care.

Purpose:

To investigate corneal higher-order aberrations in healthy humans.
To evaluate the impact of aging and corneal curvature on corneal HOAs.
To determine the relative contributions of the anterior and posterior corneal surfaces to overall corneal aberrations.

Summary:

Corneal HOAs were analyzed in healthy individuals using a Scheimpflug camera, allowing separate assessment of anterior and posterior surfaces.
Results indicate that anterior corneal surface aberrations are the primary drivers of whole-cornea HOAs.
The main HOA, Z(4,0) spherical aberration, increases with age, as do third-order aberrations like coma. Elderly individuals exhibit higher root-mean-square values for 3rd and 4th order aberrations.

Impact:

Provides insights into age-related visual changes related to corneal optics.
Highlights the dominant role of the anterior cornea in aberration profiles.
Informs the development of corrective strategies for age-related visual disturbances.