Tag Archives: vision problems

Peripheral Vision: What are the Main Deciding Factors

Simply stated if you feel that your vision is like looking through a tunnel where on both sides you feel darkness or opaqueness then you get an idea of what peripheral vision really means. In technical terms this kind of vision is part of the normal vision that occurs outside the center point of your gaze. In other words, if you have this kind of vision problem then it means that you don’t actually see objects or surroundings in the normal wide angled way although you may be able to visualize things at the center of your gaze. This kind of vision problem that some people experience is also known as tunnel vision. Studies have revealed that generally human beings have lesser peripheral vision than that of animals.

Problems with tunnel vision

You are likely to experience several problems with tunnel vision as the density of your receptor cells on the retina, in technical way of saying, is the greatest at the center and quite meek or lowest at the edges or sides. This is the first of the symptoms that you may suddenly see and without doubt sometimes the tunnel vision appears all on a sudden and without any warning.

Tunnel VisionYou may also find it difficult in distinguishing between different types of color and shapes of objects. You may also find it difficult to see in dim light and may also find it difficult to walk properly due to vision problem on the edges. It is also seen that people may suffer severe to moderate symptoms of such vision loss that may affect their lifestyle too.

Some people may experience flashes in peripheral vision along with tiny specks also known as eye floaters that drift aimlessly around your field of vision. This may greatly affect their daily routine and would prove to be quite dangerous while driving. In such cases you must seek medical attention at once.

Basic causes of tunnel vision is due to glaucoma, eye strokes, detached retina, brain damage, neurological damage, compressed optic nerves and head injuries.


There is no good treatment if you have severe tunnel vision loss although for moderate cases there may be some solace. In case of moderate tunnel vision loss you may go to a low vision specialist who may prescribe you specialized eyewear or optical devices. You may with the help of these improve your mobility and may slowly carry out routine tasks at home or office.

You may also experience blurred peripheral vision caused by strokes, eye injuries, toxins and other medical conditions. In such case you don’t see things properly as in many cases it is seen that the retina gets torn and dislodged and the inner back portion of your eye that provides the vital function like blood, nutrients and oxygen gets blocked.

The best way for keeping away tunnel vision is to prevent it in the first place. There are some eye exercises taught by sports expert that can be useful for you or otherwise you may put eye drops prescribed by your doctor.

Eyesight test: How to Identify Eye Vision Problems

If you have noticed some changes in your vision then you may test your eye problem initially with an online test. There are several charts in the Internet that you may instantly follow and see whether you have any refractive problem or not. These are in the form of charts and help you read the letters or diagrams on your computer with the help of your naked eyes.

The charts are so arranged that they form a pattern where the big letters or diagrams are on the top and subsequently become progressively smaller. This is the first step that you may take while trying to convince yourself and your family whether you have a problem or not. There are of course different ways as to how to test your eyesight yet for the more intricate tests you need to go to your ophthalmologist especially when your vision problem is acute.

Initial testing for vision problem

You may make use of the now famous and generally used Snellen Eye Chart which gives you the right way to interpret as to how you read each steps of letters as they follow into a progressively smaller state. For handicapped people there are other charts yet most of them follow the same pattern as depicted by the Snellen Eye Chart. There are 11 rows in the chart and usually you end up without able to read the last two rows or more if you have visual problem.

When you have noted that it is not easy to read the last two or three rows easily then you may have to visit your ophthalmologist. There are two reasons why you need to do this. For one you never know how much is your vision loss or whether you are also suffering from some other eye disease problem.

This means that an eye chart has its limitations and even if you were to follow the online chart reading you may be able to ascertain your vision loss generally, but not fully. Here you would need a more sophisticated eyesight test and this is possible only at an ophthalmologist.

Comprehensive Eye test

You will be able to get a comprehensive eye test when you visit your doctor who may suggest you that your eye has only refractive problem or that it has some other disease. You are likely to be suggested glasses, lenses or perform refractive surgery when the problem is one of vision error only.

Your doctor undertakes testing eyesight with other equipments and tools that gives him or her fair chance of diagnosing any hidden problem like glaucoma or other problems like peripheral vision, depth perception, color perception or failure to perceive.

If you have any eye disease then your doctor may suggest you medications apart from wearing glasses. You may also need to go for regular check up as most eye diseases are progressive in nature and tend to become acute as one ages. The tests often include eye fluid pressure, drying up of eyes and studying shape of the retina.