Tag: cataract

Double Vision – Seeing Double – Causes of Diplopia

What is Diplopia?

Diplopia is also known as Double Vision. It occurs when an individual sees 2 or more images of the same object. Diplopia is different from the blurred vision where a single object appears to be unclear.

The vision in humans is single Binocular vision. This means that the images from both the Eyes are recorded and processed by the Nervous System but it makes a single image. An interruption in this process can make a double vision.

The double vision may be present in 1 Eye known as Monocular or 2 images can be made from both the Eyes together known as Binocular.

Physiological Diplopia

Diplopia can be a normal phenomenon, for example, when focusing on an object that that is close up, another object in the distance can appear double. This is known as Physiological Diplopia. It is generally not noticed because the Brain has the power to suppress these double images.

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Cataract (Cloudy Eye Lens) Types, Causes and Symptoms

Cataract

Definition

Cataract is the film that grows on the Eyes causing the image to be doubled or they see the double image.

The Cataract does not form on the Eye but within the Eye.

The Cataract is the clouding of the natural Lens. The Lens is the part of the Eye that focuses the light and produce sharp and clear image.

Cataract

Photo by : wikimedia

It is contained in a Capsule. The old cell dies and they are trapped in the Capsule. These cells get together to form the cloud in the Eye. This makes the image blur.

The Cataract mostly occurs due to the aging process.

The diseases like Diabetes can also cause Cataract and the use of Alcohol may lead to the Cataract.

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Cataract: Causes, Symptoms and Treatment

Cataract

Eyes are no doubt one of the most attractive organs of anyone’s personality but if proper care is not provided to them then this beauty can get badly affected.

cataractHere I am going to discuss a very common disease of the eyes and that is famously known as Cataract. First I would like to give you the proper definition of this disease in medical terms ‘it is the clouding that develops in the crystalline lens of eye and it also affects the eye sight’.

Normally you might have seen some person with a blurry type of eye lens just like fog on the glass of window, in the normal routine we can have many names for this problem but the proper medical name is ‘Cataract’. Normally the eye lens tends to be so clear that we can clearly see the inner texture but for a person with this disease, you can see the inner side of eye so clearly.

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Cataract – Causes and Symptoms

Cataract affects the most sensitive sensory organ of the body i.e. eye. A cataract is a development of a cloud in the eye’s natural lens. The cloud lies behind the iris and the pupil. The lens of eye works much like a camera lens. It focuses light onto the retina at the back part of the eye. These lens also adjusts the focus, which enables us to see things clearly either these are too close or far away.

The lens mostly consists of water and specific proteins (crystallins). These specific proteins in the lens perform specific functions. These are responsible for maintaining the clarity of the lens. As the age passes, the structures of these lens proteins reshape or some proteins start to combine together which result in clouding of the lens .This condition is called cataract which over the time grows. Larger cloud covers most of the lens making almost impossible to see.

Researchers are trying to gain the root cause with which these specific proteins make clusters in abnormal ways which causes lens cataracts. One recent theory suggests that the fragmented parts of these proteins combine with normal proteins, thus creating abnormal functioning. At birth or during early childhood, cataracts occurrence is very rare. It only occurs due to hereditary enzyme defects in this age.

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