Cataract can be defined as the clouding of the natural lenses in the eyes. This is caused by the clumping of protein in the eye lens. Cataract is a common eye disorder and the leading cause of loss of vision in people who are past their fortieth birthday. Cataract can occur in one or both eyes. When diagnosed properly, cataract can be treated with surgery to prevent blindness.
Depending on where and how they develop, there are many types of cataract. The most common amongst these are:
1. Subcapsular cataract
These occur at the back of the eye lens. Diabetic patients are very susceptible to this kind of cataract.
2. Nuclear cataract
Yellowish-brown cataract that form in the center of the lens are called nuclear cataract. This is usually seen in cataract caused by ageing.
3. Cortical cataract
Cataract in the lens cortex are known as cortical cataract. These are wedge shaped and whitish in color. Spokes protruding out of these opaque wedges can be seen moving towards the center of the eye.
4. Congenital cataract
Though they are not common, babies can also have cataract. Cataract formed at birth or within the first year of a baby's birth are known as congenital cataract.
5. Secondary cataract
6. Traumatic cataract
If your vision becomes cloudy years after an eye injury, it could be a traumatic cataract. It can take several years for this to happen.
7. Radiation cataract
Though the type of cataract might differ from person to person, the symptoms are usually the same. Some of the common symptoms of cataract are:
1. Blurred vision
2. Reduced night vision
3. Increased sensitivity to light and glare
4. Seeing halos around lights
5. Colors appearing faded
6. Double vision
A reading test is the first step towards diagnosing cataracts. This is followed by tests to measure the eye pressure. Your doctor will also need to dilate the pupil to check the condition of the optic nerves and retina.
Surgery is the safest way to remove a cataract. Surgery is usually recommended when cataract begin inhibiting your daily life such as preventing you from driving, interfering with reading etc.
In most cases, this can be done as an outpatient procedure. The earlier it is diagnosed, the easier it is to treat. Hence, if you notice any of the symptoms mentioned above, get your eyes checked at once. The surgery is a day-care surgery only, so a person can go home the same day.
With everything requiring a computer to execute, more and more people end up looking at the computer screen for hours on end. This could range anywhere from a couple of hours to really long hours like 16 to 18. The effect of is a group of symptoms, which are collectively known as computer vision syndrome or CVS (syndrome means a collection of symptoms). The cause of this is the strain and pain resulting from constant staring at the monitor.
It is a type of repetitive stress injury, where a particular organ, the eye here, is subjected to repeated action (staring at a monitor) resulting in a group of symptoms. This is also compounded by age, where the flexibility to adjust to near and far vision is gradually reduced.
Symptoms of CVS:
There is no damage per se, but a constant strain on the eyes leads to:
This could be a progressive condition, where the symptoms get worse with time. Treatment is definitely an option once the problem sets in, but this is a condition which can be definitely prevented with some simple, effective steps.