What are the most common types of eye defects:

• MYOPIA or NEARSHIGHTED. Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. This would cause the person in having blurred vision looking at objects in the distance.
  


• HYPEROPIA or FARESIGHTED. This vision problem occurs when light rays entering the eye focus behind the retina, rather than directly on it. This would cause having to focus more when come to seeing near objects.
  


• ASTIGMATISM. This condition occurs when the cornea or the lenticular lens is not round but oval in shape. This will split the light rays into 2 focusing point in the eyes. As a results the person will see a distorted objects both far and near.
  


• PRESBYOPIA. This condition occurs when the focusing ability of the eye reduces with age and normally starts at 40 years old. This will cause the person having difficulty looking at near object.