Keratometry Flashcards
R.E.Dx
Refractive error diagnosis
R.E.Rx
Refractive error correction
Keratometry
Measurement of the cornea
Ophthalmometry
Measurement of the eye
Antimetropia
One eye myope and other hyperope
Anisometropia
Unequal refractive error of 1D or higher (usually)
Components of keratometer
Illuminating object
Telescope
Doubling apparatus
Focusing mechanism
WTR astigmatism expect
Less
ATR astigmatism expect
More
Oblique astigmatism expect
relatively the same
Higher K readings indicate
Myopia
Lower K readings indicate
Hyperopia
Normal K reading
43-44D
Increasing myopia with unchanged K indicates
Increasing axial length
Anisometropia with equal K readings indicates
Unequal axial lengths
Anisometropia with unequal K readings indicates
Magnitudes of K readings