No. Strain of the eyes affects the muscles and nerves in this area, which can lead to headaches, among other things. But not the eye lens, which is usually clear and thickening and clouding in the cataract.
The cause of cataracts is a slowed metabolism and biochemical processes that affect the proteins in the lens substance. These are in most cases a typical problem of the older age.
So if you want to treat your cataract by relaxing and training the eye muscles, the chances of success are poor. On the other hand, it can (for example, more frequent breaks in screen work, just let your gaze wander for longer) already promote the fitness of your eyes and thus the visual responsiveness. The cataract is more likely to stop with a small operation.
Author: Dr. Hubertus Glaser