Eye Conditions

Eye Info

Myopia Condition

Myopia is commonly called short-sightedness and occurs when an eye is too long or strong for the light-bending ability of the cornea. Light rays entering the eye do not come to a sharp focus on the retina as they should, and instead focus in front of the eye, producing a blurred distance image.

Short-sighted people can often see reasonably clearly at short distances, but will not be able to see distant objects clearly. They find it hard to read road signs and scoreboards and to play ball games. Recognising people in the distance may be a problem for many short-sighted people. Often a person will not realise that they cannot see clearly but an eye examination by an optometrist will reveal the problem. This can be corrected with spectacles or contact lenses.

Hyperopia Condition

Hyperopia is the medical term for long-sightedness. It occurs when an eye is too short to power the light-bending ability of the cornea. Light rays entering the eye don’t come to focus sharply on the retina. Instead, they focus back behind the eye, producing a blurred image. Hyperopic individuals, however, can use their focusing muscles to “pull” the image forward onto the retina, often resulting in the ability to see far but not very well at near.

If there is a significant amount of hyperopia, the effort of focusing (called accommodation) can lead to blurry vision , especially for close objects, because the closer the object the more focusing is required. Hyperopic people may experience fatigue in their eyes or headaches after a lot of visual work. Reading is more difficult and school work can be affected. This can be corrected with spectacles or contact lenses.

Presbyopia Condition

Just like our bones and muscles deteriorate over time so do our eyes round about the age of 40 years.

As we approach our 40’s the lack of elasticity and flexibility of the lens causes some of these symptoms:

  • Eye strain or headaches after reading or doing close work
  • Difficulty reading small print or text
  • Eye fatigue when focusing intently on text or objects
  • Requiring brighter light to be able to read
  • Trouble focusing on text or on your computer screen

Presbyopia can easily be rectified with the correct Multifocal designed lenses.

Astigmatism Condition

Astigmatism is a very common refractive (focusing) error. It occurs when the front curvature portion of the cornea has an oval shape (like a rugby ball) rather than a round shape (like a netball ball). The two different curves in such a corneal surface each bend light rays to a separate focus point. This causes images to appear distorted. Certain letters may be more difficult to read than others, depending on the orientation of the lines within them.

Objects at all distances are indistinct or blurred and the eye cannot focus. Astigmatism often causes headaches, eye fatigue and loss of concentration. This is because the eyes may try, without success, to correct the blurred vision. Astigmatism can be successfully corrected with glasses or contact lenses all the rays of light focus at the same distance so that they all fall correctly on the retina.

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