 They are also part of other forms category's as they are also do-it-yourself exercises although quite a few scientists say that they actually harm the children's eyes

The German optician Hans-Joachim Haase developed a method to correct an alleged misalignment.His method, called the "MKH method", is not recognized as an evidence-based approach.Behavioral optometry is largely based on concepts which lack plausibility or which contradict mainstream neurology, and most of the research done has been of poor quality.