100825 Optometry 40 A photo of a woman's eye taken with a retinal camera, 25 August 2010.

A photo of a woman's eye taken with a retinal camera, 25 August 2010.. The eye is the only place in the body where a clinician can see blood vessels without cutting the patient open. An eye test is not just about checking vision it can also reveal how healthy the eyes are. An eye test can highlight other health conditions, such as high blood pressure, diabetes, high cholesterol and even brain tumour.