Hyperphoria

[Alabama]

Can someone please briefly explain the standards for measuring hyperphoria, esophoria & exophoria? What exactly is a Maddox rod? A potential employer is interested, and I'd perfer not ask my current medical examiner, lest he gets new ideas on where to start prodding... Is this something I can get tested for at a general eye clinic?
Thanks!

[Flyin'Dutch']

Depends which authority you want to know it for.

For the FAA there is no standard for a class 3 medical.

For classes 1 and 2:

Hyperphoria: 1 Diopter

Eso/Exophoria: 6 Diopters

Maddox rod is a oblong approximately 1 x 6 inch piece of (?glass or other transparancy) with a gradation of prisms.

It is used togethere with a light. The subject (that is you!) must align a light with the line seen through the glass. The amount of diopters needed to align the two is a measure of phoria.

HTH

FD

PS: Forgot to write that any decent optician/eyeclinic can measure this

[Alabama]

Thanks for the info Flyin'Dutch'!
It is actually for a JAR class 1, with measurements at 2 different distances (6m and 33cm). I'm assuming a diopter is the same as the little triangle symbol. Can the test results from a US doc be translated properly to meet this requirement?

[Flyin'Dutch']

I'm assuming a diopter is the same as the little triangle symbol.

Yup.

Can the test results from a US doc be translated properly to meet this requirement?

No doubt they can be interpreted but for the medical you will have to perform it again anyway, I would have thought (you do for FAA medicals)

FD

[Alabama]

I understand. Just want to find out about any problems ahead of time before I sit for the real deal.

Thanks again!