What Are The Causes of Eye Disease?
The main causes of eye problems can be divided into five groups:
- Inflammation of the eye and surrounding structures caused by a bacterial, viral, parasitic or fungal infection.
- Injuries to the eye and surrounding structures, either as a result of trauma or an object in the eye.
- Genetically inherited eye diseases, many of which may only manifest later in life and affect the structures and the functioning of the eye which therefore can impair visual abilities. In some cases, however, children are born with these conditions.
- Diseases or conditions, such as migraine or diabetes, which can affect other organs of the body, such as the eyes.
- External causes, such as allergies or eye strain due to over-use, or as a side effect of medication.
What Are The Symptoms of Eye Disease?
The three symptoms indicative of eye disease are changes in vision, changes in the
appearance of the eye, or an abnormal sensation or pain in the eye.
Changes in vision can include the following symptoms :
- Nearsightedness is caused by an elongation of the eyeball over time, making it difficult to clearly see objects far away.
- Farsightedness is caused by the shortening of the eyeball, making it difficult to see objects that are close-by clearly.
- Blurry or hazy vision, or loss of specific areas of vision, which can affect one or both eyes and is the most common vision symptom. Any sudden changes in vision should be a cause of concern.
- Double vision means a single clear image appears to repeat itself. This could be accompanied by other symptoms like headaches, nausea, a droopy eyelid, and misalignment of the eyes.
- Floaters are specks or strands that seem to float across the field of vision. These are shadows cast by cells inside the clear fluid that fills the eye. These are usually harmless,