Blurred vision is often a vital indicator of eye disease. It may affect both eyes (bilateral vision loss), or one eye (unilateral vision loss), and whether it occurs rarely or frequently, it should never be left untreated. This is because when your vision is blurry, you are unlikely to see fine details, and the resultant lack of sharpness can be quite frustrating. Vision loss such as double vision, blindness, or blurry vision may mean various things, ranging from retinal detachments or migraines to dry eyes or glaucoma.
Causes of vision loss
A person experiencing sight loss often sees very little or in extreme cases, may see absolutely nothing at all with different eye conditions presenting different challenges. For instance, very few people tend to be completely blind with the rest experiencing anything from perceiving light only; having vision only in the center of their eye; having no side vision; having blank spots, seeing everything as blurry; or just having enough sight to read without being able to carry out night time activities. Whatever may afflict you, do not assume that if you have enough sight to do one thing, you have enough to accomplish everything. Below, therefore, we take a look at 3 common causes of vision loss as follows:
People with glaucoma tend to experience side vision loss, with early-onset glaucoma characterized by a gradual loss of contrast such as difficulty in seeing the pavement’s kerb or seeing the steps on a staircase. Conversely, those with advanced glaucoma find it difficult to move around, especially during night time when vision is more hampered although there is likely to be a central area in the eye where one can still see sufficiently enough to read and perform some duties up close. This is what is commonly referred to as tunnel vision.
With the early symptoms of glaucoma not being discernible enough, routine eye examinations are vital for early detection. Remember, you have a higher risk of developing glaucoma if you are short-sighted, have a family member who also suffers from this condition, or you are of Asian or African descent.
- Macular degeneration
Macular degeneration leads to loss of sight in the centre of the eye thus making writing, reading, and up-close work a tad difficult. In some cases, a person may also find it hard to perceive colors while in others daylight sight may be compromised so additional lighting may be needed. This condition is a more prevalent cause of vision loss among senior citizens.
Contrary to popular belief, cataracts are not skin growing over the eye but rather a clouding of the eye lens. This then makes a person’s vision dim or blurred because light is unable to pass past the now clouded lens to its intended destination at the back of the eye. Cloudiness of the lens may also occur in several locations, making light rays to split up once they enter the eye, resulting in double images. This, perhaps, explains why cataracts make images look misty and blurred.
As a cataract progresses, its centre becomes yellow thus giving everything that you see a yellow tinge. Also, colors may become duller and you are likely to see the finer details. People who suffer from cataracts can be overly sensitive to glare and light- with very sunny days or bright light dazzling them, while too little makes it difficult for them to see.