Refractive Errors of The Eye
The Normal Eyeball
The eye is like a camera. In a camera, light passes through a lens system and focuses onto the film. The cornea and lens are at the front of the eye and are similar to a camera’s lens system. 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. A normal eye is able to see far and near without the need for vision correction aids.
Refractive Errors
Refractive errors refer to vision problems that occur when light cannot focus onto the retina of the eye. This is caused by the shape of the eye.
 Myopia |
 HyperopiaInability to see near objects |
 AstigmatismIrregular cornea causes blurred vision |
|---|
Treatment Options
Treatment options for refractive errors include:
Glasses
Contact Lenses
Lee Hung Ming Eye Centre
