Related Experiment Video
Updated: Jun 27, 2025

Scleral Cross-linking Using Riboflavin and Ultraviolet-A Radiation for Prevention of Axial Myopia in a Rabbit Model
Published on: April 3, 2016
[Correlation between refraction and axial length in Albinos]
H Aboubakar1, V A Dohvoma2, S R Ebana Mvogo3
1Faculté de médecine et des sciences pharmaceutiques, université de Douala, Douala, Cameroun.
Purpose:
To investigate the relationship between refraction and ocular axial length in albinos.
Patients And Methods:
A cross-sectional, analytical study was carried out from June to November 2021 at the Central Hospital of Yaounde (Cameroon), which included consenting albino subjects aged over 15years. All subjects underwent visual acuity testing, axial length measurements and objective refraction under cycloplegia.
Results:
We included 51 albino subjects. The mean age was 26.06±9.47years, and the sex ratio was 0.5. Type 2 oculocutaneous albinism (OCA2) was predominant, representing 82.4% of cases. The mean uncorrected visual acuity was 0.93±0.25 logMAR, and the most common ametropia was myopic astigmatism (52.9%). The mean axial length was 24.65±2.54mm with extremes of 21.54 and 30.33mm. Eyes with myopia and myopic astigmatism had significantly longer axial lengths than those with hyperopic and mixed astigmatism. A strong, significant negative correlation (r=-0.93; P˂0.001) between the spherical component of the refraction and axial length was found.
Conclusion:
The spherical component of the refraction decreases significantly with increasing axial length in albinos.
More Related Videos
Related Concept Videos
Focusing of Light in the Eye
X-ray Crystallography
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Poisson's Ratio
Anatomy of the Eyeball

