Re: How to perform retinoscopy
- From: Dr Judy <mpace99@xxxxxxxxxx>
- Date: Wed, 30 Apr 2008 06:10:53 -0700 (PDT)
On Apr 29, 6:52 pm, douglas <Protoman2...@xxxxxxxxx> wrote:
How does one perform static retinoscopy using a direct retinoscope? Do
dilate the eyes w/ atropine, darken the lights, take the retinoscope,
stand 20' away, and try to neutralize the cat's-eye reflex w/ the
phoropter?
It would be impossible to do at 20', the reflex would be far too dim
and you would be unable to reach either the phoropter or trial lenses
in a trial case.
Can be done with or without cycloplegia. Usually done at 50cm or
67cm, depending on the length of the examiner's arms. Either loose
lenses in trial frame, lens bar or lenses in phoropter can be used.
An allowance is made for the working distance.
Which is better, direct or indirect, sreak or spot?
There is no indirect retinoscope, streak is preferred as it is much
easier to detect astigmatism with it.
Judy
.
- References:
- How to perform retinoscopy
- From: douglas
- How to perform retinoscopy
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