Cataract

Definition A cataract is defined as an opacity of the lens of the eye that causes partial or total blindness. The word is derived from the Latin "cataracta", which means "waterfall.” To the eye of an observer, the foamy white opacity of an advanced cataract resembles that of the turbulent water of a waterfall. (Chang, Cataracts Definition, 2014) Etiology The lens is a naturally clear, transparent, and avascular structure located behind the iris. Light passes through the transparent lens to the

A cataract is a condition in which the transparent lens becomes progressively opaque due to varying circumstances such as genetics, environment, and diet, amongst many other variables. Regardless of the pathogenesis from which the cataract developed, a reduction in visual performance and thus, visual acuity is exhibited. In order for the visual acuities to be enhanced again, the cataract needs to be removed. An ophthalmologist will remove it and replace the natural lens with an intraocular lens (IOL)

the causes and treatment of cataract blindness. What is cataract blindness? This is a type of blindness that is caused by a cataract, which is a clouding in the eye’s normally clear lens. Cataracts are the leading cause of blindness worldwide and can affect either or both eyes. The normally clear or black pupil becomes clouded with a grey, milky colour and causes vision to become proportionally reduced. It has a great impact on a human’s independence because a cataract only allows light and dark

the visual disorder, cataract, by providing a definition of this condition and discussing the incidence and prevalence of this condition in Australia, India and Germany. It will also explore the treatment and prevention strategies as well as roles of two health professionals in providing these strategies. It is estimated over 285 million people worldwide are visually impaired with one of the major causes being cataract at 33% (figure 1A)(Pascolini & Mariotti, 2012). Cataract is considered to be

Cataract surgery is among the most common procedures performed in older people and is one of the oldest procedures known. It is done due to the lens becoming cloudy and leads to the vision being affected. This happens when proteins in the lens clump together causing the cloudy area to become larger, affecting vision more over time. The most common cause is age related, but it could also be due to other reasons such as traumatic, diabetic, radiation, secondary and congenital. The first type of

Nahshon Brown 11/16/11 Human Anatomy 5th Period Cataracts What is Cataracts if you may ask? A cataract is an eye disease in which the natural lens of the eye gradually degrades the visual quality. The natural lens sits behind the colorful part of the eye known as the iris in the area known as the pupil, which cannot be seen unless it becomes very cloudy. This is crucial, because the lens plays a significant role in focusing a

Cataracts are an eye condition that results in the clouding of the lens that distorts or makes one vision hazy. It becomes a visual impairment when it interferes a with the normal functioning of daily task and activities. Cataracts can be unilateral meaning it affects one eye or bilateral(both eyes). This eye condition is seen in both children and adults. The age of onset can be congenital( at birth) or acquired later in life. The location, size, and thickness of the cataract can determine the significance

Cataract has been known to mankind for many centuries, and cataract surgery for many years has enabled people to recover their vision, this assignment will be focusing on the different cataract surgery over the years the advantages and disadvantages plus on certain occasions the masterminds behind the innovations. Firstly it’s important to define cataract; a cataract is a cloudiness or opacity in the normally transparent crystalline lens of the eye. This cloudiness can cause a decrease in vision

Congenital Cataract is one of the leading preventable diseases that causes blindness around the world, being one of the easiest diseases to treat, the major complication being that some countries do not have the sufficient resources to treat it. The disease is formed in the eye and forms a sort of cloud in the natural lens of the eye that could eventually lead to blindness if not treated properly. This type of cataract is different from most cataracts, since congenital cataracts is present in an

Postoperative endopthalmitis is one of the most devastating complications of cataract surgery. Despite of the great progress in the lines of treatment of this serious condition, the visual results are still poor and about 40% of cases sustain severe visual loss (corrected distance visual acuity of less than 20/200).[1] The incidence of endophthalmitis after cataract surgery varies according to the surgical technique, it has ranged from 0.04% to 0.13%.[2-3] This complication can end by evisceration