Question 1

cyl eye test -2.5 means what?

Accepted Answer

Astigmatism: The 'cyl' column in your eye prescription refers to astigmatism.  You can think of astigmatism like warping on the surface of your eye -- like a football shape compared to a basketball shape.  You have 2.5 diopters of astigmatism.

Question 2

how are eye vision test generally scored?

Accepted Answer

Compared to standard: The chart used to test the eye is calibrated for normal vision at 20 feet. The outcome achieved is compared to what a normal eye can see at 20 feet. So if you can only see at 20 feet what a normal eye sees at 40 feet, your vision is considered to be 20/40. This is measured with and without corrective lenses at distance and at near. The vision with correction is considered to show the true vision.

Question 3

what is koh test for eyes?

Accepted Answer

Fungal test: If the doc suspect fungal infection around the skin of the eye then the test can be performed.

Question 4

how can i test eye dominance?

Accepted Answer

Which eye dominant?: This is very important in refractive surgery. Line up one's thumb with both eyes open focusing on a distant target.  Close the right eye and see if it is still aligned with the thumb. If it is you are right eye dominant if not you will notice it aligned when you close the left eye and you are right eye dominant.

Question 5

does cornea eye thickness test hurt?

Accepted Answer

No pain: There is a slight stinging from the numbing drop applied before the test.  The test touches the center of the cornea with an ultrasonic, tiny probe which you will not feel.  One touch is all and the data is recorded.  Not a test to be worried about in the least.

Question 6

what are good ways to test eye dominance?

Accepted Answer

Yes.: Here is how to do it.  Take a piece of paper and cut a small hole in it.  Using both hands, hold it at arms length and look through the hole at something.  While continuing to look, slowly bring the paper to your face.  The hole will be around your dominant eye.

Question 7

what do sph, cyl and axis mean on an eye test?

Accepted Answer

Shape of eye: These are terms used by the od or md to describe measurements of the shape of the eye.  They determine your prescription.  They are probably meaningless to you.  Important for the dispenser of your eye wear.

Question 8

can you tell me what an amsler grid is for on any eye test?

Accepted Answer

Amsler Grid: Is 1/4 inch graph paper with a dot on it.  With each eye, you stare at the dot and pay attention to the lines.  If the lines are missing or not straight, mark the area and call you ophthalmologist.   This was described by french ophthalmologist marc amsler.

Question 9

can the multifocal be made from my previous eye refraction test?

Accepted Answer

Multifocal : Current and latest refraction is always the best.

Question 10

can you buy non-prescribed contact lens online without an eye test?

Accepted Answer

No: You need a current prescription from your eye doctor in order to order them.

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Rta eye test chart

A member asked:

Cyl eye test -2.5 means what?

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How are eye vision test generally scored?

A member asked:

What is koh test for eyes?

A member asked:

How can i test eye dominance?

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Does cornea eye thickness test hurt?

A member asked:

What are good ways to test eye dominance?

A member asked:

What do sph, cyl and axis mean on an eye test?

A member asked:

Can you tell me what an amsler grid is for on any eye test?

A member asked:

Can the multifocal be made from my previous eye refraction test?

A member asked:

Can you buy non-prescribed contact lens online without an eye test?

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