Since schools are being conducted online and screen time has increased for children and many of students have started suffering from vision issues some of them have even got there spectacles at the age of 4 so this school has suggested them to be taking vitamin A dose can you please suggest which brand aur dose will be suitable also if it's like vitamin d shots which has to be taken in the clinic or a simple syrup of multivitamin will do or any vitamin A alone syrup Thank you