Objectively assessing visual quality to boost standards

Shedding light on post-refractive surgery visual quality myths

The problem of accurately determining the presence of suboptimal visual quality is further compounded by the way in which numerous factors, such as refractive power, ocular dynamics and brain-based image interpretation, contribute to the final image a patient sees. As these are factors that can fluctuate, so can a patient's appreciation of visual quality.

The benefits of objectivity

The concept of measuring visual quality when attempting to optimize vision is by no means new. Devices, such as corneal topographers and wavefront aberrometers have been used for this purpose for many years. But as they produce results that are difficult to interpret and fail to account for important information such as scattering, their clinical usefulness remains limited.1