Studies have shown that there is at least 9 percent chance that aging individuals having at least one of the impairments developing the other. The possible angles of concern regarding this is that the nerves carrying the signals and actuating the sensory nerves and the sensorineural network may have started to degrade and lose its efficiency, therefore causing complications in proper sight and hearing.

What the scientists and researchers are trying to determine is the actuality that the sensory network of the cranial nerves responsible for the specific organ functions are related to one another and that aging is affecting a certain part of the whole neural framework, thus contributing to multiple chances of complications with other senses.

Other studies have shown through statistical data that diabetes may be causing the progressive complications and impairments of the hearing process as well as the visual process. The effect of diabetes, even among younger people is the inability to properly supply the correct amount of blood with nutrients and thus limiting the amount of oxygen being carried out to these organs and supporting tissues. Similar with any other cardiovascular disease, the decrease in a sufficient amount of blood supply may cause the commencement of the degradation of the nerves involved for the cranial areas such as the eyes and the ears.

The direct effect of diabetes on the hearing loss pattern is brought about by presbycusis that is characterized by the gradual loss of sensorineural perception of an individual and is determined by a higher intensity in sound hearing. This is also still being studied if the amount of proper oxygenation and nutrient distribution by an unhealthy cardiovascular system may lead to the same effect on the visual aspect of the human physiology.

Until now, the occurrence of hearing loss and visual loss are both dependent on the occurrence or presence of a manifesting disease such as Goldenhar, and Down's syndrome. Even if research has found visual loss as a prior manifestation before a hearing loss, the former loss is still attributed to the disease which caused it and could also be linked to the latter loss of physiological functions.