The reason for diminished vision in one eye could be amblyopia because of the difference in the prescription of two eyes. When there is such a condition then the weaker eye becomes lazy and there is diminshed vision in that eye. The doctors have rightly told you that nothing can be done for such an eye as the pathways between eye and the brain are not well-developed. So, your son is functionally one eyed. Sitting too much on computer can cause computer vision syndrome. To help dryness he should use a lubricating eye drop like Refresh Tears frequently. He should keep blinking while doing work on computer as that is reduced while reading and adds to dryness. He shoult give rest to eyes in between. It would be a good idea to see an ophthalmologist and get his refraction done again. Thanks.
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