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To remove your contact lenses, first wash your hands with soap and water and then dry them with a lint free towel. Then, making sure that your lens is centered on your eye, gently pull down on the lower eyelid and eye lashes with the middle finger of your removal hand.

Next, secure your upper eyelid and lashes with the middle finger of your other hand and look up. Then, with the index finger of your removal hand, touch the edge of the contact lens and slide it down onto the white part of your eye, making sure not to touch the contact lens with your fingernail.

Next, gently squeeze the lens with your thumb and index finger and remove. Repeat this process for your other eye and then store your contact lenses according to the procedure given to you by your eye care provider.

Astigmatism is a refractive error usually caused by an irregular curvature on the surface of the eye. As light enters the eye it is focused on two points instead of a single point needed for clear vision. Normally the curve on the surface is equal from left to right and from top to bottom, giving the surface of the eye an equally round shape like a ball.

With astigmatism one of these curves is elongated making the surface of the eye oval shaped. This could, for instance, cause the light being refracted by the horizontal axis of the cornea to focus on a different point than the light being refracted by the vertical axis.

This causes two points of focus instead of one. If the points are focused before the retina the astigmatism is considered nearsighted or myoptic. If the points are focused past the retina it is considered farsighted or hyperoptic.

Symptoms of astigmatism include headaches, eye strain and fatigue. Severe astigmatism can cause a blurriness of images at all distances, while milder cases may cause blurriness only at certain distances. If you suspect you are suffering from astigmatism, ask your doctor for advice. Successful corrective measures include contact lens or refractive surgery.