How the Eye Works?
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The eye is like a camera. In a camera, light passes through a lens system and is focused onto the film. The cornea and lens are at the front of the eye and are similar to a camera’s lens systems. The retina is located at the back of the eye and is similar to the camera’s film. In the normal eye, light rays of an image pass through the cornea and the lens and are focused directly on the retina to produce a clear image. Myopia (Nearsightedness)
Hyperopia (Farsightedness)
Astigmatism
Presbyopia
Caused by changes within the eye’s lens as one ages, presbyopia affects everyone, and eventually we all will need to wear reading glasses or bifocals, generally around the age of 40 plus. The ciliary body, which changes the shape of the crystalline lens, begins to lose some of its elasticity causing a loss in the eye’s ability to focus from distance to near. LASIK does not change the aging process. Presbyopia is not affected by the laser treatment, as the laser works on the cornea and not the crystalline lens. Anyone considering laser vision correction should be aware of the impact of presbyopia. People who are presbyopic, or are reaching this stage, should consider Monovision - a technique that is used for people who desire not to use reading glasses all the time. EmmetropiaNormal eyes – no need for any correction. The information contained is not intended to replace an examination or consultation with an Optometrist or Ophthalmologist; it is presented to serve as an introduction into the surgical options available Latest Blog Posts
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In a myopic eye, the eye is more elongated than normal or the cornea is too steeply curved. Light rays are passed through the cornea and lens, but the point at which they focus is in front of the retina, not on the retina. This causes distance vision to be blurry. 
In a hyperopic eye, the eye is too short or the cornea is flatter than normal. Light rays fall beyond the retina. This causes distance vision to be blurry. 
With mixed and irregular Astigmatism, the cornea is more football-shaped versus spherical. The light rays have more than one focal point on the retina. There are various types of astigmatism including regular, mixed and irregular astigmatism. The result is distorted vision. 
As part of the natural aging process, our eyes gradually lose the ability to focus on near objects. As our ability to focus on near objects diminishes, reading small print or reading in dim light becomes increasingly difficult. This natural loss of reading vision usually begins around the age of forty and progresses into our sixties. This natural, normal aging process of the eye is known as Presbyopia.
