|
NR. 4/2008
|
|
|
|
|
|
|
|
|
Dokładność badania
refrakcji oka metodą skiaskopii statycznej
The Accuracy of Static
Retinoscopy in Refractive Error Examination
Maciej Perdziak |
|
|
|
|
|
|
| Summary: |
Purpose: To
evaluate the accuracy of static retinoscopy comparing to
the subjective refraction.
Material and Methods: 100 patients in various age
were studied. Static retinoscopy was carried out in 100
persons without cycloplegia and in 33 persons following
cycloplegia. The examined group was classified in 5
subgroups according to their age. The age range was 19
to 81 years.
Results: The results of subjective refraction
were compared with static retinoscopy results. A
comparison of the subjective refraction and static
retinoscopy results, shows that for spherical equivalent
the mean error of static retinoscopy without cycloplegia
and after cycloplegia was the same and equal to 0.18 D.
For 33 individuals in whom we used 1.0% Tropicamid sol.,
static retinoscopy, when performed without cycloplegia,
appeared to be more accurate in comparison to the
retinoscopy after cycloplegia. The mean error (in this
group) for retinoscopy without cycloplegia was 0.15 D
and for retinoscopy after cycloplegia was 0.18 D in
comparison to the subjective refraction.
Conclusion:
1. Static retinoscopy is very accurate method and is
very useful in refractive error evaluation.
2. In 33 adult individuals (in whom we used 1.0%
Tropicamid sol.) static retinoscopy without cycloplegia
was more accurate method than retinoscopy performed
after cycloplegia.
3. In some cases of low vision, non-cooperate patients
or children, retinoscopy results can be used for
prescribing spectacles.
4. Retinoscopy results can be a very good starting point
for subjective refraction. |
|
|
| Key words: |
static retinoscopy,
subjective refraction, cycloplegia, low vision,
refractive error, accuracy. |
|
|
|
|
|
|
|
|
