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What you are describing seems that you have received a mild amount of trauma to your eye. The trauma might have injured or caused an inflammation in one of the eye muscles - the fact that your maddox rod test is positive. These kind of injuries might not be very obvious in a routine eye examination. But the good news is that most of these injuries heal over time. In very few cases the symptoms might decrease and not recover fully.
I would recommend you to use the prism glasses, for a comfortable vision, take oral anti-inflammatories like ibuprofen for a week to 10 days even in absence of pain to take care of the inflammation and use lubricating eye drops like genteal/refresh tears/optive etc.