Category Archives: Cool Eye Tests

Online Eye Test: Find Your Blind Spot In Each Eye – From Fort Lauderdale Eye Care & Eyewear

Everyone has a BLIND SPOT in their vision of each eye.

Take this FUN test to check it out for yourself !!

Look at graphic of the cross and the circle at the top of this post.

Sit at your computer with your nose pointing in between the cross and the black circle.

Cover your LEFT eye and stare at the cross with your RIGHT eye.

Now SLOWLY move towards the computer screen while still staring at the cross with your RIGHT eye.

At somewhere around 10-14 inches from the computer screen – the black circle will disappear and the area where the black circle was…will now be all white – this is your BLIND SPOT.

If you move closer to the screen or farther away –  the circle will re-appear.  At just the right distance – the circle will disappear.

Now try the OTHER eye…but this time cover your RIGHT eye and look at the CIRCLE with your LEFT eye…..move closer and you will see that the CROSS now disappears!!

Your eye has an inner lining which is made of a sheet of nerves.  This sheet of nerves is responsible for your vision and what you see and it is called the RETINA.  There is a “hole” in the sheet where the Optic Nerve enters the eye.  This area is called the Optic Nerve Head.

Photoreceptors are cells in the retina that detect light and allow you to perceive “vision”.  On the optic nerve head there are NO photoreceptors.  Thus, there is no light or vision detected at this spot in the retina.  This is your “Blind Spot”.  Every eye has a blind spot….your blind spot in your right eye is slightly on your right and your blind spot in your left eye is slightly on your left.

Your brain automatically “fills in” the blind spot area for you…..

Now try it AGAIN with the above green and yellow graphic….but this time you will notice that when you move to just the right distance , the circle will disappear and your brain will fill in your blind spot WITH YELLOW when you are looking with your right eye (left eye covered)….and your brain will fill in your blind spot WITH GREEN when you are looking with your left eye (right eye covered)!!  Your brain automatically matches the surrounding colors when it “fills in” visual information for you.

Cool huh??

Your brain can even “fill in” missing information for you…..in the above graphic, you’ll notice that when you cover your left eye and look at the cross with your right eye – the brain will “fill in” your blind spot (the area where the circle is).  You will see that your brain fills in the line for you.  Keep looking at the cross – don’t look back at the circle – or you will will see the circle again.

Try it AGAIN with the above graphic while looking at the cross with your right eye (cover your left eye) – your brain will put a red circle where your blindspot is….it is “filling in” the “missing information” !!

Amazing.

If you need an eye exam in the Fort Lauderdale area – give us a call at 954-763-2842 or request an appointment ONLINE at www.FLEyecareEyewear.com   Our Optometrist is Dr Dawn Bearden – she has been an eye doctor for over 17 years!

 

Graphics fromSerendip….check out their very informative  website at http://serendip.brynmawr.edu/bb/blindspot1.html

.

.

 

CLICK HERE to Like Us on Facebook

Advertisements

Leave a comment

Filed under Cool Eye Tests

Online Eye Test For Astigmatism from Fort Lauderdale Eye Care and Eyewear

Astigmatism is a visual condition caused when some surfaces of the eye are oval shaped….like a football or an egg. These surfaces in the eye that are oval shaped can be the cornea (the front of the eye) or the lens (inside the eye). Most often astigmatism is caused by the cornea being oblong or oval shaped.

This oblong shape causes the light rays that enter the eye to be distorted and not focus properly on the retina in the back of the eye. If you have uncorrected astigmatism, you can have various symptoms such as blurry vision, eyestrain, tired eyes, headaches or fatigue.

Here are several links to websites that have online testing for astigmatism. Check them out!!

CLICK HERE for ONLINE ASTIGMATISM TEST #1

CLICK HERE for ONLINE ASTIGMATISM TEST #3

CLICK HERE for ONLINE ASTIGMATISM TEST #4

Astigmatism can be quickly and easily corrected with eyeglasses, contact lenses (called astigmatic or toric contacts) or Laser Surgery (called Lasik).

If you feel that you may have astigmatism and you need correction OR if has been more than 12 months since you have seen an eye doctor…..its time for you to schedule an eye exam! 

If you need an eye exam in the Fort Lauderdale area – you can call our office at 954-763-2842 or schedule an appointment ONLINE at www.FLEyecareEyewear.com

Our Optometrist is Dr Dawn Bearden.  She has been an eye doctor for over 17 years!!

Astigmatism Diagram courtesy of:

.

CLICK HERE to Like Us on Facebook

Leave a comment

Filed under Astigmatism, Cool Eye Tests