If you have glaucoma in both eyes, usually only one eye will be treated at a time. Laser treatments for each eye will be scheduled several days to several weeks apart. Studies show that laser surgery can be very good at reducing the pressure in some patients. However, its effects can wear off over time.
The statute of limitations pertaining to customer initiated chargebacks is 18 months from the time the transaction appears on the statements. So, for chargeback purposes it is important to keep you business credit card receipts for 18 month.
Credit card receipts. 1  keep in file until monthly statement received. 2  reconcile with your statement to ensure charges and payments have been properly processed. 3  if for major purchase with warranty, staple to the owner's manual and file for the term of the warranty.