This study created percentile charts for axial length and axial length to corneal radius of curvature (AL/CR) ratio for Chinese children and found age and gender-specific differences in the data. The AL/CR ratio was found to be a more accurate predictor of myopia than axial length alone.
How would you manage a child with hyperopia who exhibits an axial length more like that of a myope? Read this case study to find out how colleagues would approach such a case, and the value of axial length measurement.
How do A-scan and optical biometry compare? How many measurements should you take and how frequently? Learn about instruments, measurement processes and how to use data on axial length in myopia management.
This case describes a teenager with a low refractive error but a surprisingly long axial length. Should we monitor or actively manage their myopia? In this case, axial length tells a different story than other factors in identifying the long-term risks of myopia for the patient.
Previous studies have explored a link between choroidal thickness measures and myopia development. This longitudinal study found that although having thinner choroid layers at age 11 were not associated with adolescent myopia or eye length growth, having a longer axial length was predictive of future myopia development and progression.
In our Q&A interview format, we talk to Mario Teufl, optometrist from Austria, who explains how he uses the Topcon MYAH in his practice for myopia management – from axial length to topography to dry eye and more.
In our new Q&A format we explore the Gullstrand Refractive Analysis System (GRAS) Module in the OCULUS Myopia Master with ophthalmic optics expert David Kern, from Germany. We also provide you some additional tips and links to further reading on putting this into practice.
In this case, we meet a child whose axial length has progressed 0.4mm in one year, even with myopia control treatment. Yet, his refractive error hasn’t changed. What could cause this and what is the best course of action?
You may have left the concept of a ‘model eye’ back in your student days – learn how understanding the ocular power components of the eye can be applied to clinical diagnosis and management decisions in childhood progressive myopia.
The axial length growth trajectories modelled in this study revealed that regardless of a child’s age, a myopic shift of at least -0.85D and/or 0.74mm over three years suggests future myopia development. Read more about specific risk factors for younger children, and other ocular component findings in this large study of European children.
