Anisocoria - EyeWiki
Physiologic (also known as simple or essential) anisocoria is the most common cause of unequal pupil sizes, affecting up to 20% of the population [2]. It is a benign condition with a difference in pupil size of less than or equal to 1 mm [3].
Anisocoria - StatPearls - NCBI Bookshelf
2023年8月8日 · Physiologic anisocoria is usually defined as a pupillary inequality of 0.4 mm, seldom greater than 0.8 mm, not due to a secondary cause. If the anisocoria is physiologic, the difference in pupil sizes should remain equal in dim and bright lights.
Anisocoria (Unequal Pupil Size): Symptoms & Causes - Cleveland Clinic
2024年3月11日 · Eye care specialists classify anisocoria as either physiological (caused by something malfunctioning inside your body) or pathological (caused by a health condition). Physiological anisocoria is more common. This distinction isn’t as important as getting your symptoms evaluated right away.
Physiologic Anisocoria (unequal pupils) - Texas Children’s
Anisocoria that is NOT associated with an underlying medical condition is called physiologic anisocoria. Physiologic anisocoria can occur in 20% of the population. The difference between the sizes of the two pupils is rarely more than 1-2 mm but may vary from time to time.
Understanding Anisocoria: When One Pupil Is Bigger Than the …
2024年12月1日 · One of the most benign reasons is physiological anisocoria, which occurs in about 20% of the population. In this case, the difference in pupil size is usually less than 1 millimeter and does not change with light exposure.
Approach to the patient with anisocoria (unequal pupil size)
2023年7月31日 · Causes of anisocoria (unequal pupil size) range in seriousness from a normal, physiologic condition to one that is immediately life threatening. When a patient presents with anisocoria, the fear of a serious condition, such as an intracranial aneurysm, often leads clinicians to obtain numerous tests, which are not always necessary.
Physiological anisocoria - Wikipedia
Physiological anisocoria is when human pupils differ in size. It is generally considered to be benign, though it must be distinguished from congenital Horner's syndrome, pharmacological dilatation, or other conditions connected to the sympathetic nervous system. [1]
Anisocoria - Eye Disorders - Merck Manual Professional Edition
The goal of evaluation is to elucidate the physiologic mechanism of anisocoria. By identifying certain mechanisms (eg, Horner syndrome , third cranial nerve palsy ), clinicians can diagnose the occasional serious occult disorder (eg, tumor, aneurysm) manifesting with anisocoria.
What is Anisocoria? - WebMD
2024年5月29日 · This is known as physiological or essential anisocoria and does not affect vision. If your pupils have been unequal for a long time and you have no other vision problems, you don't need to...
Anisocoria - Ophtnotes
2023年4月7日 · Physiological anisocoria is typically defined as a difference in pupil size of ≥0.4mm, with no secondary cause. It is in fact the most common cause of anisocoria, affecting up to 1 in 5 people. In physiological anisocoria, the difference in pupil sizes should remain the same in dim and bright light.