Total cataract is a medical term used to describe a complete clouding of the eye's natural lens, which leads to impaired vision. The word "cataract" is pronounced as /ˈkætərækt/ in IPA phonetic transcription, with the stress on the first syllable. The spelling of "total cataract" follows the rules of English orthography, with each syllable pronounced as /ˈtoʊ.təl/ and /ˈkætərækt/, respectively. A total cataract is typically treated with surgery to remove the cloudy lens and replace it with an artificial one.
Total cataract is a medical condition characterized by the complete opacification or clouding of the lens of the eye, resulting in significant impairment or loss of vision. The lens of the eye is typically a clear, transparent structure that focuses incoming light onto the retina at the back of the eye, allowing for clear vision. However, in cases of total cataract, the lens becomes cloudy, preventing light from passing through and causing a decline in vision quality.
Total cataracts can occur as a result of various factors, such as age-related changes, trauma to the eye, certain medications, or underlying medical conditions like diabetes. The cloudiness of the lens may affect one or both eyes, and its severity can vary between individuals.
Symptoms of total cataract may include blurred or hazy vision, decreased visual acuity, sensitivity to light, difficulty seeing in dimly lit environments, and a yellowing or dimming of colors. As the condition progresses, everyday tasks like reading, driving, or recognizing faces can become challenging or even impossible.
Treatment for total cataract usually involves surgical intervention, where the clouded lens is surgically removed and replaced with an artificial intraocular lens (IOL). Cataract surgery is a common and generally safe procedure, resulting in significant improvement in vision for most individuals. However, it is important to consult with an ophthalmologist or eye care professional to determine the most suitable treatment plan for total cataract based on each individual's unique circumstances.
One involving the entire lens.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "total cataract" is composed of two parts: "total" and "cataract".
1. Total: The word "total" comes from the Latin word "totus", which means "whole, entire". It entered the English language through Middle French in the 15th century.
2. Cataract: The word "cataract" has its origins in the Latin word "cataracta", which means "waterfall" or "portcullis". It originally referred to a large, powerful waterfall due to its strong, rushing flow. In medical terminology, "cataract" refers to the clouding or opacity of the lens of the eye, which can cause vision impairment.
So, the etymology of "total cataract" signifies a complete, entire clouding of the lens of the eye leading to vision loss.