6 mm or less; a difference in size of 1. In fact, one out of five people have pupils that are normally different sizes. In some cases, the abnormal pupil may be the one that is smaller and in other cases the abnormal pupil may be the one that is larger. Anisocoria is a condition in which the two pupils of the eye are different sizes; in other words one pupil is larger than the other. 0 or more is rare ( 114– 116) ( Fig. The pupil allows light to enter the eye so that you can see. Sometimes, though, having uneven pupil size can be a symptom of a serious eye problem. In physiologic anisocoria, the difference in pupil size may also be equal in light and dark. When a patient presents with anisocoria, the fear of a serious condition, such as an intracranial aneurysm, often leads clinicians. Osteocondrosi anisocoria. Anisocoria can be caused by several things. Your pupils are the black circles in the center of your eyes, and they are usually the same size. Non- articular: This group includes Sever' s disease ( of the calcaneus, or heel), and Kienbock' s disease of the hand, and other conditions not completely characteristic of the osteochondrosis, such as Osgood- Schlatter' s disease ( of the. How can the answer be improved? You can be born with this condition or develop it later. Causes of anisocoria range in seriousness from a normal, physiologic condition to one that is immediately life threatening. If the difference in pupillary sizes is greater in light, the larger pupil is abnormal. Anisocoria is a condition characterized by an unequal size of the eyes' pupils. Dec 27, · Anisocoria, or unequal pupil sizes, is a common condition. The varied causes have implications ranging from life- threatening to completely benign, and a clinically guided history and examination is the first step in establishing a diagnosis. Affecting 20% of the population, it can be an entirely harmless condition or a symptom of more serious medical problems. Anisocoria is a condition in which the pupil of one eye differs in size from the pupil of the other eye. Jump to navigation Jump to search. If extraocular movements are impaired, particularly with ptosis, 3rd cranial nerve palsy is likely. This form of anisocoria is known by several names, including physiologic anisocoria, simple central anisocoria, essential anisocoria, and benign anisocoria. Anyone can have pupils that differ in size with no problems. Anisocoria is when your eye’ s pupils are not the same size. Anisocoria symptoms include drooping eyelid ( ptosis), reduced eye movement and eye pain.