which of the following pathological conditions affects part of the retina?
General Pathology[edit | edit source] Obstruction of the retinal vascular lumen by an embolus, thrombus or inflammatory/ traumatic vessel wall damage or spasm. Giant cell arteritis may also be associated with this condition.
The affected portion of the retina (ischemic) will appear white (retinal ganglion cells swell due to ischemia). In the case of a central retinal artery occlusion, the foveal center (center of the macula) appears red (called a cherry red spot).
Additionally, because of the increase in our elderly population, there has been an increase in the percentage of the population at risk for this condition. Macular degeneration is a formidable challenge to patients, their doctors, and our society as the costs for delivering state-of-the-art care increase. Macular degeneration, also called age-related macular degeneration (AMD or ARMD), affects the macula, which is the central portion of the retina of the eye. Our central vision (what you see directly in front of you rather than what you see at the side [or periphery] of your vision) is dependent on a healthy macula.
Retinal artery occlusion refers to obstruction or blockage of the retinal vascular lumen by an embolus, thrombus or inflammatory/ traumatic vessel wall damage or spasm. The lack of oxygen delivery to the retina during the blockage may result in severe loss of vision.