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Doctor insights on: Pinhole Test Eye

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Can a pinhole test determine if you have lazy eye or not?

Can a pinhole test determine if you have lazy eye or not?

Not definitively: Pinhole helps to test for any refractive error, and can help predict best potential acuity (pap). Lazy eye amblyopia is defined: DX of exclusion, once the visual pathway is determined to be ok but the vision is still limited due to developmental changes in the brain visual cortex. ...Read more

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Thoughts? Could pinhole glasses hurt/damage one's eyes?

Thoughts? Could pinhole glasses hurt/damage one's eyes?

No: Wearing or not wearing glasses, including pinhole glasses, will not damage eyes. Pinhole glasses provide better visual acuity at the cost of poor or non-existent side vision and need for lots of light to see. ...Read more

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I have seen a lot of mixed opinions on if pinhole glasses will help one's eyes, but will wearing them do any harm?

I have seen a lot of mixed opinions on if pinhole glasses will help one's eyes, but will wearing them do any harm?

No harm: Pinhole glasses only allow the image to be projected through the center of your cornea and lens where no refractive error will blur the image. This does no harm, but also won't help your underlying refractive error. ...Read more

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Can pinhole glasses help improve eyesight or reduce eye strain?

Can pinhole glasses help improve eyesight or reduce eye strain?

Blurry vision: Pinhole glasses, like squinting, help to refine your focus generally with distance viewing. The pinholes limit the amount of light entering your eyes and therefore are not practical way of helping your vision. The ophthalmologist uses pinhole acuity to help determine whether a refractive error exists. The pinhole glasses are harmless. Better approach is just getting a refraction for glasses. ...Read more

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Cyl eye test -2.5 means what?

Cyl eye test -2.5 means what?

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. ...Read more

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How are eye vision test generally scored?

How are eye vision test generally scored?

Eye chart: Vision is recorded by the smallest line read on the vision chart in reference to 20/20 being normal, and it is recorded with and without your best correction. ...Read more

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How can I test eye dominance?

How can I test eye dominance?

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. ...Read more

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Does cornea eye thickness test hurt?

Does cornea eye thickness test hurt?

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. ...Read more

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What are good ways to test eye dominance?

What are good ways to test eye dominance?

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. ...Read more

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

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

Specific parts of Rx: To expand on dr. Proffitt's answer, sph = sphere; if this is a negative number, the prescription is a myopic or nearsighted prescription and a positive number dictates a farsighted or hyperopic prescription. Cyl = cylinder or the amount or power of the astigmatism correction. Axis is the direction in which the astigmatism correction is placed in the glasses. ...Read more

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