How high is the refractive error in a contact lens?

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My son is 7 years old. He was born with congenital glaucoma, but received the surgery in both eyes at 2 mos old. He has had a normal pressure ever since; however, he was left extremely nearsighted. He is currently a -26.0 refractive error with his glasses. Do they make contact lens for him? Thanks for your help.
I have had a - 24.00 made at a custom contact lab , which was equivalent to - 27.00 in glasses...so yes, it is made.

That is definitely something to discuss with his eye Dr. , as to whether it would benefit him at this time.  (+ info)

question about refractive errors?

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The refractive error most commonly associated with aging is

hyperopia
myopia
presbyopia
nystagmus
Presbyopia  (+ info)

How does refractive error relate to your 20/__ vision?

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It is my dream to attend the Naval Academy. Apparently to get in your refractive error in your eye cannot exceed -6.00 or +6.00 diopters. I want to know how, if at all, that correlates to the standard vision ranking.
The important part is the - or + 6.00 maximum cut off point they ask for.

The 20/? is just a measurement taken with the eyechart that doesn't really mean much.

It's mainly to verify how well you are seeing with the correction they prescribe for you. The idea is to get you to see 20/20 or better if possible , with your correction on. That's where the eyechart is used to get that measurement.

So, regardless of the power of the lenses, most people are corrected to 20/20 or better.

I think that's what you wanted to know....  (+ info)

What is it called when two eyes have different refractive error?

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Anisotropy or something.... I don't remember. It's when you need a different prescription for each eye.
Anisometropia , if the refractive error is different in each eye but both are myopic or both are hyperopic.

Antimetropia is when one is myopic and the other is hyperopic.

Myopic = nearsighted...Hyperopic = farsighted  (+ info)

How the heck do I find out what my refractive error is?!?!?

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On my prescription, it doesn't say +/-, nor is it a single digit number (i.e. 2.00, 3.00), its a 3 digit number (one is 350, other is 275 i think), how do you decipher that into regular refractive number? my cylinder number is also 3 digit (025), instead of a single + number...uh, help????????
You could ask your eye doctor. Probably you just aren't seeing the decimal and the refraction is 3.50 and 2.75. Also, probably all plus, unless indicated otherwise is the standard where you are.  (+ info)

What are the possible errors in taking a skin fold measurement?

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The reaon why skinfold measurements are done three times is to correct for errors in technique. List a minimum of three errors possible in taking a skin fold measurements.
I've never seen skinfolds done three times on one site. Well, when you are learning yes, but you should wait at least a minute between each one.

Reasons for error.

1) Muscle lifted
2) Pressure applied for to long
3) In correct position  (+ info)

What percentage of diagnostic errors occur from prostate biopsy?

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I know that biopsy is accurate but , surely , sometimes errors in the diagnostic, through biopsy, can surely occur!.
2%  (+ info)

What is the treatment for Inborn errors of metabolism?

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My cousin has inborn errors of metabolism.He is 27 now.All the treatments have given reaction.
Is gene therapy useful?
Read www.cancertutor.com  (+ info)

Can an ophthalmologist ballpark what the visual acuity of an eye that has a refractive error of -5.5?

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An ophthalmologist won't ball park, he/she will measure it directly during your eye exam.

Did you means with or without glasses? Vision with glasses is not dependant on refractive error, unless you have been told you have an eye disease that decreases your acuity, likely your acuity with glasses is 20/20.

If you mean visual acuity without glasses, that cannot be calculated from refractive error, it must be measured. If you need to know because of a job application, "ball parking" your unaided acuity would be worse than 20/400.  (+ info)

Does anyone know the percentage of placement errors with endotracheal tubes in the Emergency room setting?

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I am doing research into the percentage per year of endotracheal placement errors that occur in the emergency room setting? Not Paramedics. Does anyone have any information on the percentage or where I could get this information?
I can only, hesitantly, suggest trying...
http://www.nlm.nih.gov/services/statistics.html

There doesn't seem to be anything specific to your search, but someone might be able to help.
Pubmed looks the most hopeful.  (+ info)

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