Don’t be fooled. For many years, there have been many claims about exercises for vision improvement. Most of these claims have been and continue to be false. It uses a common salesman trick of overstating personal testimonies to convince many people that an individual experience or belief can be applied to everybody even though there is no scientific proof that it actually makes a difference. In science, we call this a placebo effect. If people believe something works, there may seem to be a perceived benefit, but there may not be a scientifically proven benefit. Scientific studies account for this placebo effect.
Eye exercises that claim to eliminate glasses have been proven scientifically to be false. However, a person can be convinced that eye exercises help by using the placebo effect. There are some vision therapy that is designed for very specific problems that require coordination with a trained eye care professional. Eye exercises are ineffective for nearsightedness, farsightedness and astigmatism and do not treat any eye diseases. You can change your perception of your vision through exercises but your actual objective vision is completely unchanged.
Perception is important. Attention is important. We experience life and our vision through our objective vision and through our perception and attention. Eye exercises do effect our perception and attention. Art influences our perception and attention as well. Art has value in our lives. So, there may be some value gained in some eye exercises in the way that it directs attention and perception, but there is no change to the eye and its objective visual ability. So, be skeptical of claims of eye exercises that make overreaching claims of improving vision.