The vision would become blind in one eye due to several conditions. The reasons vary widely ranging from simple reason of crying for long time to serious medical issues like brain damage. Blurred vision in one eye and both the eyes for that matter is caused due to refractive error which can easily be corrected by wearing the right eyeglasses.
Because of blurred vision, the visual activity in one eye may get reduced and the affected person may not be able to see objects present at some distance. This would cause cloudy vision or difficulty in reading and even eye pain and irritation. In rare cases, blurred vision is an indicator of serious medical issues like nerve collapse in the brain or brain tumor.
Symptoms :
Dryness in the eye, increased sensitivity, excess of discharge or tears from the affected eye, eye pain and irritation, bloodshot eyes, reduced eyesight during night and headache are some of the symptoms of blurred vision in one eye. However not all the symptoms are present on the same person and the signs vary widely depending on the underlying cause of the disease.
In case of serious complications like brain damage, there may be blurred vision along with reduced consciousness and sudden behavior changes. In that case, you need to rush the patient to the nearby hospital or call medical care center immediately.