Friday, March 11, 2011

Retinal Hemorrhage

Retinal hemorrhage is an abnormal bleeding onto the surface of the retina due to a burst in one or several blood vessels located on its surface. This rupture in a tiny artery or vein in the retina is usually caused by hypertension, retinal vein occlusion, or diabetes mellitus, which in turn causes small fragile blood vessels to form and which can easily be damaged. As the retina is an eye layer made up of sensitive photoreceptor cells (cones and rods) and on which the images we see are focused on, retinal hemorrhage can lead to blindness or visual impairment, especially if it occurs in the macula (the most sensitive part of the retina). Even the smallest damage to the retinal blood vessels can result in vision problems.