Binocular vision: Correcting disparity

Typical vision-related or asthenopic complaints, such as headaches, tired and burning eyes or blurred vision can be expected in more than 50% of patients even in the younger age group between 18 and 38 years.¹ Where this is found to be due to fixation disparity (FD), prescribing prisms may help relieve the symptoms. A new method has been developed which allows an aligning prism to be determined based on the direct measurement of FD.

There are many things which interfere with good binocular vision in today’s digital environment, such as the increased amount of work carried out at short distances and the need to constantly switch between multiple digital devices. These challenges spurred us on to look for a new method for assessing FD.