Extractions: The lens of the eye is transparent, allowing light to pass through it and be focused on the retina. A cataract is an opaqueness or cloudiness in the lens that prevents light from reaching the retina. A cataract usually starts out as very small opaque areas, then becomes larger. How rapidly the cataract becomes larger varies greatly depending on many factors including the location of the cataract within the lens, the age of the animal, and the cause of the cataract. The size of the cataract will effect how much vision your pet has. A very serious side effect of uncontrolled or poorly controlled diabetes is cataract formation. Diabetes-induced cataract formation is much more common in dogs than in cats. Not all diabetic dogs develop cataracts, but most do. Some dogs form cataracts so quickly that their vision is impaired and that's why the owner takes them to the vet, and then the diabetes is diagnosed. For other dogs, cataracts may form within weeks of diagnosis, or it may take months, or even years for cataracts to develop. If your vet tells you that your pet is developing a cataract, or has cataracts, it is very important that you get a referral to a certified veterinary ophthalmologist and have the specialist examine your pet's eyes. The ophthalmologist has special education, training, and equipment that will allow him or her to give your pet's eyes a full examination. The lens is not the only structure involved - the health of the entire eye should be evaluated.
InteliHealth: Cataracts InteliHealth Featuring Harvard Medical School s consumer health information.For more than 550 diseases and conditions, learn What Is It?, Symptoms, http://www.intelihealth.com/IH/ihtIH/WSIHW000/9339/9925.html
Extractions: Cataracts What Is It? Symptoms Diagnosis Expected Duration ... Additional Info What Is It? The eye's lens is a transparent structure that focuses images on the light-sensitive retina. Cataracts are cloudy areas in the lens. They occur when certain proteins in the lens form abnormal clumps. These clumps gradually get larger and interfere with vision. They distort or block the passage of light through the lens. "Cataract" means "huge waterfall" or "enormous downpour," which is how some people describe their clouded sight, like trying to look through a waterfall.
ScienceMaster - JumpStart - Cataracts JumpStart cataracts on ScienceMaster.com. Most cataracts are related to aging.cataracts are very common in older people. By age 80, more than half of http://www.sciencemaster.com/jump/life/cataracts.php
Extractions: A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. A cataract can occur in either or both eyes. It cannot spread from one eye to the other. The lens is a clear part of the eye that helps to focus light, or an image, on the retina. The retina is the light-sensitive tissue at the back of the eye. In a normal eye, light passes through the transparent lens to the retina. Once it reaches the retina, light is changed into nerve signals that are sent to the brain. The lens must be clear for the retina to receive a sharp image. If the lens is cloudy from a cataract, the image you see will be blurred. The lens consists mostly of water and protein. When the protein clumps up, it clouds the lens and reduces the light that reaches the retina. The clouding may become severe enough to cause blurred vision. Most age-related cataracts develop from protein clumpings. When a cataract is small, the cloudiness affects only a small part of the lens. You may not notice any changes in your vision. Cataracts tend to "grow" slowly, so vision gets worse gradually. Over time, the cloudy area in the lens may get larger, and the cataract may increase in size. Seeing may become more difficult. Your vision may get duller or blurrier.
Cataracts In Dogs cataracts may be either anterior or posterior capsular cataracts. I can t recallif there is a breed with primarily anterior capsular cataracts. http://www.vetinfo4dogs.com/dcataract.html
SUNY State College Of Optometry: Cataracts cataracts vary from extremely small areas of cloudiness to large opaque areasthat cause a cataracts are most often found in persons over the age of 55, http://www.sunyopt.edu/uoc/cataracts.shtml
Extractions: No one knows exactly what causes cataracts. It is known that a chemical change occurs within your eye that causes the lens to become cloudy. This may be due to advancing age or it may be the result of heredity, an injury or a disease. Excessive exposure to ultraviolet radiation present in sunlight, cigarette smoking or the use of certain medications are also risk factors for the development of cataracts. Cataracts can develop in both eyes, but often at different rates.
Cataracts - VeterinaryPartner.com - A VIN Company! cataracts are unavoidable in diabetic dogs no matter how good the insulin cataracts can begin to dissolve after they have been present long enough. http://www.veterinarypartner.com/Content.plx?P=A&A=659&S=1&SourceID=42
Diabetes Monitor - Cataracts Most cataracts are related to aging. cataracts are very common in older people . Most agerelated cataracts develop from protein clumpings. http://www.diabetesmonitor.com/b131.htm
Extractions: A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. A cataract can occur in either or both eyes. It cannot spread from one eye to the other. The lens is a clear part of the eye that helps to focus light, or an image, on the retina. The retina is the light-sensitive tissue at the back of the eye. In a normal eye, light passes through the transparent lens to the retina. Once it reaches the retina, light is changed into nerve signals that are sent to the brain. The lens must be clear for the retina to receive a sharp image. If the lens is cloudy from a cataract, the image you see will be blurred. Age-related cataracts develop in two ways: Clumps of protein reduce the sharpness of the image reaching the retina.
Cataract - Wikipedia, The Free Encyclopedia BBC Health - Conditions - cataractsHow cataracts can affect your vision, plus possible treatments. http://en.wikipedia.org/wiki/Cataract
Extractions: Over US$240,000 has been donated since the drive began on 19 August. Thank you for your generosity! A cataract is a large waterfall or place where the flow of a river changes dramatically. The term comes from the Greek word kataraktes , whose meaning "to dash down" or "downrush" describes rapidly running water, and the Latin cataracta , whose meaning describes "a waterfall", "a floodgate ", or "a portcullis ". As rapidly running water turns white, the term was later used metaphorically to describe the similar appearance of mature ocular opacities. Normal vision. Courtesy NIH National Eye Institute The same view with a cataract. A cataract is any opacity which develops in the crystalline lens of the eye or in its envelope. Cataracts form for a variety of reasons, including long term ultraviolet exposure, secondary effects of diseases such as diabetes , or simply due to advanced age; they are usually a result of denaturation of lens proteins Genetic factors are often a cause of congenital cataracts and may also play a role in predisposing someone to cataracts. Some cataract formation is to be expected in any person over the age of 70. Fully half of all people between the ages of 65 and 74 and about 70% of those over 75 have some cataract formation. Cataracts may also be produced by
The Peter Gurney Guinea Pig Pages - Fits The Peter Gurney Guinea Pig Pages. cataracts. As previously stated the Abyssinianbreed is the one most prone to this condition but other breeds can suffer http://www.oginet.com/pgurney/cataracts.htm
Extractions: Cataracts As previously stated the Abyssinian breed is the one most prone to this condition but other breeds can suffer from them. There is no known cause for these and consequently no knowncure but as they are more common in older guinea pigs it cold be part of the aging process. They do not render the guinea pig blind, leastwise not until they are very elderly. People I have spoken to who suffer from them say that it like looking through a veil. The cornea of one eye becomes opaque and usually within a month or so the other eye follows suit. The good news is that guinea pigs who suffer from this condition seem to take it in their stride and simply carry on as normal. I used to give a supplement of vitamin A but no longer do so. After observing other people's guinea pig with this condition who were not on this supplement I came to the conclusion that they coped just as well as my own. Though I am a strong believer in the value of supplements for as therapy for specific ailments, if they can do without, all the better. Return to Index page
Cataracts CHC Wausau Hospital s Medical Library and Patient Education Center providesresearch services and healthcare information to physicians, http://www.chclibrary.org/micromed/00041670.html
Extractions: presbyopia . It is a normal condition of aging, generally resulting in the need for reading glasses. The lens is made up of approximately 35% protein and 65% water. As people age, degenerative changes in the lens' proteins occur. Changes in the proteins, water content, enzymes, and other chemicals are some of the reasons for the formation of a cataract. The major areas of the lens are the nucleus, the cortex, and the capsule. The nucleus is in the center of the lens, the cortex surrounds the nucleus, and the capsule is the outer layer. Opacities can occur in any area of the lens. Cataracts, then, can be classified according to location (nuclear, cortical, or posterior subcapular cataracts). The density and location of the cataract determines the amount of vision affected. If the cataract forms in the area of the lens directly behind the pupil, vision may be significantly impaired. A cataract that occurs on the outer edges or side of the lens will create less of a visual problem Cataracts in the elderly are so common that they are thought to be a normal part of the aging process. Between the ages of 52-64, there is a 50% chance of having a cataract, while at least 70% of those 70 and older are affected. Cataracts associated with aging (senile or age-related cataracts) most often occur in both eyes, with each cataract progressing at a different rate. Initially, cataracts may not affect vision. If the cataract remains small or at the periphery of the lens, the visual changes may be minor.
Pet Columns: Treatment For Cataracts Is Not Just For Humans Anymore! Getting treatment for a pet s cataracts is a decision each pet owner must make.If your pet has cataracts and you think you may want to restore the animal s http://www.cvm.uiuc.edu/petcolumns/showarticle.cfm?id=340
Cataracts cataracts bar3.gif (4740 bytes). Bullet Cataract Fact Sheet from the SchepensEyeResearch Institute at Harvard A cataract is a clouding of a part of the eye http://www.lowvision.org/cataracts.htm
Extractions: Cataract Fact Sheet from the SchepensEye Research Institute at Harvard A cataract is a clouding of a part of the eye known as the crystalline lens. The lens is a clear tissue located behind the pupil - the dark circular opening in the middle of the iris or colored part of the eye. The lens works with the transparent cornea, which covers the eye's surface, to focus light on the retina at the back of the eye. When the lens becomes cloudy, or cataractous, light cannot pass to the retina properly, and vision is blurred and decreased.
Howstuffworks "Cataracts Animation" This animation explains what a cataract looks like and why they may develop. http://health.howstuffworks.com/adam-200046.htm
Tea May Help Prevent Diabetes And Cataracts Add another line to the list of benefits from drinking tea New research inanimals suggests that tea may be a simple, inexpensive means of preventing http://www.medicalnewstoday.com/medicalnews.php?newsid=23018
Juvenile Cataracts - Medical Juvenile cataracts are those that develop at an early stage in life. It isthought that juvenile cataracts are autosomal recessive, that is genetically http://www.barkbytes.com/medical/med0074.htm
Extractions: by Malcolm Dupries A cataract is described as when the eye develops an opacity, a white film, of the ocular lens or its capsule. Juvenile Cataracts are those that develop at an early stage in life. Some puppies developed the initial lesion that were less than six months old. The use of a slit lamp, also known as a biomicroscope, is required to diagnose cataracts. It is thought that juvenile cataracts are autosomal recessive, that is genetically passed from one generation to the next. In order for any autosomal recessive characteristic to appear in an offspring, both parents must either be carriers, or have the recessive characteristic. Some breeds of dog have a higher incidence of the disorder than others. It is imperative that breeders exercise caution to prevent the spread of this disease throughout their bloodlines.
Cataracts Online health news and information for consumers. http://www.stayinginshape.com/3osfcorp/libv/s07.shtml
Extractions: HEART CANCER WOMEN MEN ... ALL TOPICS A - Z A cataract is a clouding of the eye's lens (Read about " The Eye "), most often caused by age. The lens lies behind the pupil of the eye and is normally clear. With a cataract, a cloudy or opaque area develops. According to the National Eye Institute (NEI), this can start happening in a person's 40's or 50's, although cataracts usually don't start to interfere with vision until later in life. NEI says most cataracts are age-related, but cataracts can also develop for other reasons, including trauma or diseases such as diabetes. Cataracts can also occur in infants and children; they are one of the causes of amblyopia or lazy eye in children. (Read about " Amblyopia ") Cataracts start out small, which is why they may not produce any vision changes at first. As cataracts grow, however, so do the symptoms. These include: How cataracts form The lens of the eye lies behind the iris and the pupil. It focuses light onto the retina (which is at the back of the eye), where an image is recorded. The lens also adjusts the eye's focus, letting us see things clearly at varying distances.
Extractions: Home Eye Health For Patients For Health Professionals ... Glaucoma Cataracts Diagnosis Surgery After surgery Common Questions ... Eye Health Cataracts printable page Having a cataract is a bit like having a dirty windscreen on a car. It can make the view cloudy or foggy. When the sun is behind you, the vision through the dirty windscreen is ok, but when you turn into the sun, the view through the windscreen becomes a white out. A cataract is similar in that glare from lights, the sun when it is low in the sky and on-coming headlights can all cause problems with the vision. When these problems make normal daily activities difficult, it is time to get the cataract operated on. Cataracts do not permanently impair your vision and you will not go blind from a cataract. A simple operation will restore your sight. Most forms of cataract develop in adult life, and can occur any time after the age of 40. The normal process of ageing causes the lens to harden and become cloudy. Cataracts can also be caused by injuries to the eye, for instance, any cuts, blows or burns to the eye which cause damage to the lens inside the eye. Inside the eye, behind the iris (the coloured part of the eye) is a lens. In the normal eye, the lens is clear or transparent, and helps to focus light rays on to the tissue at the retina at the back of the eye. When a cataract develops, the lens becomes cloudy and prevents the light rays passing into the retina. The picture that the retina receives becomes dull and fuzzy. Cataracts usually form slowly and people experience a gradual blurring of vision.
LLUHC Ophthalmology - Cataracts cataracts. What is a cataract? One of the most common problems which can affect Almost everyone who lives a long life will eventually develop cataracts. http://www.llu.edu/lluhc/eyecare/cataracts/
Extractions: One of the most common problems which can affect vision is a cataract. Almost everyone who lives a long life will eventually develop cataracts. The term cataract is used to describe a natural lens which has turned cloudy, usually as part of the natural aging process. Cataracts are not a growth, a film, or a type of cancer. Light cannot pass through a cataract easily, so the retina only receives blurred and distorted images. The retina is then unable to send clear signals to the brain, and vision is gradually impaired. If cataracts are not removed, blindness can eventually result. Cataracts develop for a number of reasons, but the most common cause is aging. Age-related cataracts develop as a result of natural changes within the lens. In other cases, an injury or blow to the eye may cause a traumatic cataract. Some cataracts may also result from the use of certain drugs, exposure to harmful chemicals or excessive amounts of ultraviolet radiation, or some diseases. In addition, a small number of babies are born with congenital cataracts as a result of unusual prenatal factors. Very infrequently, cataracts can develop during childhood. Fortunately, almost all cataracts can be successfully removed, and vision can be restored through modern microsurgery. Symptoms: Because cataracts form in different ways, the symptoms of cataracts are variable. Most people notice that their vision gradually deterioratesobjects may begin to look yellow, hazy, blurred or distorted. Many people also find that they need more light to see clearly, or that they experience glare or haloes from lights at night. Other common problems include increasing nearsightedness, double vision, or the appearance of dark spots or shadows in the vision. In advanced cases, the cataract may be visible as a white or yellow-looking pupil.
Cataracts In Children In the older child, cataracts are often related to injuries or ocular The visual outcome for children with cataracts is much more optimistic now than it http://www.tc.umn.edu/~chris196/cataracts.htm
Extractions: Cataracts in Children What is a cataract? The eye works similar to a camera. There is a lens that helps to focus the visual image. This lens, normally crystal clear, brings objects into focus on the lining inside the eye called the retina. The retina acts like the film in a camera. When the lens becomes cloudy and interferes with vision, it is called a cataract. When a cataract occurs in a child, it may interfere with visual development. If the cataract is present in just one eye, the child will usually prefer the normal eye and ignore the eye with a cataract, leading to the development of amblyopia (lazy eye) and strabismus (wandering eye). What causes cataracts in children? Some cataracts are present at birth, and others develop during the first few months or years of life. Some cataracts will be inherited, and others will be related to metabolic or systemic abnormalities. In many cases, the cause is unknown. In the older child, cataracts are often related to injuries or ocular inflammation related to juvenile rheumatoid arthritis. When a visually significant cataract occurs in a child, prompt surgery and rehabilitation are required to maximize visual development.
Cataracts cataracts can be helped with pinhole glasses. cataracts myopia glassesnearsightedness cataracts vision eyes cataracts myopia, cataracts nearsightedness http://www.myopia.org/cataracts.htm
Extractions: cataracts myopia glasses nearsightedness cataracts vision eyes cataracts myopia, cataracts nearsightedness vision eyes cataracts myopia cataracts What are Snap-On pinhole glasses? The above picture shows a pair of Snap-On Pinhole Glasses, a form of pinhole glasses that can be very useful to people with cataracts. A cataract is an opacity in the lens that causes incoming light to scatter, causing poor vision. The wider the pupil, the more such scattering can occur. Pinhole glasses eliminate the scattering caused by the outer portion of the lens and thus improve the vision in some people. However, those people who need to wear their full prescription to get the best possible vision can't wear pinholes at the same time. These Snap-Ons are therefore designed to be worn over prescription glasses, adding the pinhole effect to the prescription lenses.
