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.
How long to keep books & records. Type of record. How long they must be kept. Copies of tax receipts. Two years after the end of the year in which the donation was made. Financial records. Six years after the end of the most recent year to which they relate (or two years after registration is revoked.