Sorry that your question was only picked up now.Your son's eye problem could be a habit ,but of concern is that eye movements like this may be a form of 'nystagmus' suggesting that he may have a problem in the cerebellum region of his brain. He should be examined and diagnosed by a specialist ophthalmologist first rather than an optician.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.