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.
1 How long to keep records: Keep the records for at least three months. 2  Review that all the purchases are correctly entered in your bank and credit card statements. 3  Review your monthly bills.4  If there is a discrepancy, then keep the document until you resolve the problem. How long to keep records: Keep the records for at least three months. 2  Review that all the purchases are correctly entered in your bank and credit card statements. 3  Review your monthly bills.