Refractive Errors Corrected By Laser Eye Surgery


normaleyeAnatomy of the Eye

Normal Vision (Emmetropia)

In the normal eye, light is focused through the cornea and lens sharply onto the retina. There the light is converted into electrical signals, which are sent to the brain to enable sight.

Normal-Vision-Emmetropia MYOPIA or Short Sightedness Light is focused in front of the retina to a large eye

Short-Sightedness (Myopia)

Short-sightedness occurs when the cornea is too steep or the eyeball is too long. This causes light to be focused in the front of the retina, making it difficult to focus beyond short distances.

Short-Sightedness-Myopia Point of focus and simulated vision with hyperopia

Long-sightedness (Hyperopia)

Long-sightedness occurs when the cornea is too flat or the eyeball is too short. Light is focused behind the retina, which makes it difficult to focus up close. In older age groups, it’s difficult to focus clearly on anything at all.

Long-sightedness-Hyperopia Point of focus and simulated vision with astigmatism

Astigmatism

When the cornea has an oval curvature, instead of round, light is focused on multiple points away from the retina rather than on a single point. Astigmatism can also occur with either short or long-sightedness.

Astigmatism Require reading glasses to see short distances

Presbyopia

As people age, the lens within the eye becomes firmer. This makes it more difficult to change the focus of the eye from distant to close objects. Ask us about KAMRA™ inlay and multifocal lens implants to correct your eyes of reading difficulties and multi-focal glasses.

Presbyopia Clouding of the lens in your eye

Cataracts

A cataract is a loss off clarity of the lens in the eye. Most cataracts are related to aging. Certain medications, an outdoor lifestyle or a family history of cataracts may also be responsible for early onset cataracts. Rarely, they may also be present at birth or develop after direct eye trauma.

If you believe you may be suffering from any of the above, please contact the Perth Laser Vision Centre to ask about laser eye surgery today

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