My Husband Have Every High Power Of 16 In The

my husband have every high power of 16 in the left and 13.5 in the right. recently doctors told us to operate the left eye for join the retina tear out. and put some eye jel inside the retina in the left eye. what should we do for reducing this high power. and we face the problem of seeing electronics and having the problem of working in the night and having irritataion and redishness at sometimes