Human eyes have been viewed as a way to gain a greater understanding of the overall health of an individual. The eye doctor often is the first person to recognize the disease process that the eye is just the only part of the picture.
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Diabetes, high blood pressure, heart disease, elevated cholesterol, stroke, high vasculitis, pressure in the spinal fluid, and brain tumors comprise an insignificant portion of the diseases that, more often than not, manifest in the eye and may be accompanied by symptoms related to vision.
Diabetes causes hemorrhaging of the retina (diabetic retinal retinopathy). Heart disease and continuously high blood pressure may result in a variety of changes in the blood vessels located in the rear part of the eyes. In many cases, eye problems do not correspond to any eye problem in any way but result from another systemic illness elsewhere within our body.
Patients suffering from migraine headaches, as an instance, are often afflicted with visual aura. However, the reason for this is vessels that are involved within the brain, not the eyes.
Furthermore, different visual symptoms that occur across different age groups can guide doctors to diagnose diseases that are specific for certain types of patients. For instance, children's eyes that are crossed can have distinct implications from those with eyes that are crossed in an adult.
Although this is a common occurrence for children it is often a sign of the presence of cardiovascular disease, diabetes, as well as central nervous system disorders for adults.
Eye doctors enjoy an exclusive observation of the body via the eyes, and many ailments that stem from the underlying systemic illness can be detected during routine annual exams.