John Styles
John's latest writings
How Do Glasses Correct Sight?
People need glasses to correct blurred vision. Blurring occurs when the image of the object that you are looking at is not focussed in the correct place on the retina at the back of the eye. There are four reasons why the image can focus in the wrong place! 1. Hypermetropia (long sightedness) Hypermetropia occurs when light focuses behind the retina. It is caused by the eye being too short... (posted by John 4 years 229 days ago.)
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People need glasses to correct blurred vision. Blurring occurs when the image of the object that you are looking at is not focussed in the correct place on the retina at the back of the eye. There are four reasons why the image can focus in the wrong place! 1. Hypermetropia (long sightedness) Hypermetropia occurs when light focuses behind the retina. It is caused by the eye being too short... (posted by John 4 years 229 days ago.)
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