Bagolini filter bars: an analysis of light transmittance and their use in a pediatric population.

Conclusion: There is a need for the production of bars with consistently reducing and comparable light transmittance of filters if measurement of density of suppression or strength of abnormal BSV with filter bars is to continue, because the current bars show inconsistencies, particularly at lower filter numbers. In the meantime, the bars are limited by their lack of comparability or repeatability. Using only BF(new) bars is preferable to using BF(Sbisa) bars or a mixture of the two types of bar because two different BF(new) bars may be comparable using filter number readings, but filter number readings from different BF(Sbisa) bars or from a BF(Sbisa) and BF(new) bar are not comparable. As the BF(Sbisa) and BF(new) bars are currently labeled, a second measure of density of suppression or strength of abnormal BSV is not recommended within 2 min of an initial measurement, because the measurement procedure seems to cause a reduction in suppression or abnormal BSV that does not recover with repeated measurements 2 min apart. PMID: 31379274 [PubMed - in process]
Source: Strabismus - Category: Research Tags: Strabismus Source Type: research