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Mohindra’s Near Retinoscopy
PURPOSE To determine the patient’s distance refractive error while using the light of the retinoscope as the fixation target．
INDICATIONS
While this method may be used with adults，it is particularly useful for determining the refractive error of infants and toddlers．
EQUIPMENT
·Retinoscope．
·Lens rack．
SET-UP
·The examiner should be 50 cm from the patient．During this procedure the examiner may use the same eye to examine both eyes of the patient．
·The room should be completely darkened．
·Set the intensity of the retinoscope to a level that allows for observation of the reflex without being aversive to the patient．
STEP-BY-STEP PROCEDURE
1．Occlude the left eye and test the right eye．
2．If you are examining an infant, the child will tend to fixate the light．If this does not occur, stimulate the child’s attention by making sounds．If you are using this method on an older child or adult, instruct the patient to look at the light．
3．Scan and identify the major meridians．
4．Using a lens rack identify the power which neutralizes each meridian．
5．Calculate your gross retinoscopy finding in minus cylinder form．
6．Add a -1.25 D sphere to the spherical component of your findings．The resultant spherocylinder represents the patient’s distance correction．
Note：The -1.25 D sphere represents an empirically defined constant．
7．Occlude the patient’s right eye．
8．Repeat steps 2 through 6 for the left eye．
9．Take the patient’s distance visual acuity through the resultant correction if it is possible to do so．
RECORDING
·Write “Mohindra’s Near Retinoscopy．”
·Record the correction and VA (if obtainable) for the right eye and for the left eye．
EXAMPLE
Mohindra’s Near Retinoscopy
0D +1.00 = -0.50×80 VA unobtainable
0S +1.50 sph |
