Yes, you can certainly find coverage for your cousin that will provide medical coverage, and some coverage for emergency vision and dental services.
For additional information on this, see: Vision and Dental Coverage Under Visitors Insurance
It is always up to the doctors' discretion whether or not they consider a condition pre-existing or not. Your cousin may want to visit a doctor prior to his visit to discuss his current condition.
Please contact our support team if you have any additional questions.
Insurance rates are regulated by law. You can't find the same insurance plan for a lower price anywhere else