Iridodonesis (/ˌɪrɪdɵdoʊˈniːsɪs/) is a term used to describe a condition characterized by the tremor or shaking of the iris in response to different movements of the eye. The IPA phonetic transcription of this word reveals that it is made up of several syllables including "iri" which is pronounced as /ˈɪrɪ/ and "donesis" which is pronounced as /doʊˈniːsɪs/. The spelling of this word may appear challenging, but breaking it down phonetically makes it easier to understand and pronounce.
Iridodonesis is a medical term that refers to a trembling or shimmering motion of the iris of the eye. The word is a combination of two Greek terms, "iris" meaning rainbow and "donesis" meaning a trembling or movement. This condition is typically characterized by an abnormal movement of the iris, which is the colored part of the eye located between the cornea and the lens.
In normal circumstances, the iris remains stable and does not display any involuntary movements. However, in the case of iridodonesis, the iris may move or shake due to certain underlying causes. This movement can often be observed by a doctor during a clinical examination of the eye.
There are several potential causes for iridodonesis, including trauma or injury to the eye, complications during eye surgeries, certain eye diseases such as Marfan syndrome or connective tissue disorders, and dislocation or damage to the lens. Additionally, iridodonesis can sometimes be associated with weakening of the zonules, which are tiny fiber-like structures that hold the lens in place.
The symptoms associated with iridodonesis may vary depending on the underlying cause and severity of the condition. Some individuals may experience blurred vision, sensitivity to light, or eye pain, while others may not have any noticeable symptoms.
Treatment for iridodonesis typically involves addressing the underlying cause. In certain cases, surgical interventions may be required to correct any structural abnormalities or stabilize the iris. It is important to consult with an ophthalmologist or eye specialist to determine the appropriate course of treatment for iridodonesis.
Hippus, a tremulousness of the iris.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "iridodonesis" is derived from two Greek terms: "iridos" (ἶρις), meaning "iris", and "donesis" (δόνησις), meaning "trembling" or "shaking".