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CONTACT LENS POLICY

Contact lenses can mould the surface of your eye, which may alter the corneal curvature, resulting in a change to your prescription. In order to properly calculate the treatment to correct your refractive error, you are required to stop wearing your contact lenses ahead of your appointments. In time, the cornea will return to its natural shape and size. Our team is dedicated to providing you with the most accurate treatment, which can only be achieved if the corneal surface is stable and in its natural shape. The difference in the length of time to remove contact lenses listed in the chart below ensures that most patients, including those coming from out-of-town, are not inconvenienced by the rescheduling of appointments if corneal moulding is apparent.

Removal of contact lenses prior to the pre-operative evaluation and LASIK or PRK surgery appointments:

TYPE OF LENS WORN

PRE-OPERATIVE PATIENT

SURGERY PATIENT

Local patient

Out-of-Town Patient

Local and Out-of-Town Patient

Soft Lenses1
(daily wear)

At least three (3) days

At least seven (7) days

At least seven (7) days

Soft Lenses1
(extended and toric)

At least three (3) to
seven (7) days

At least two (2) weeks

At least two (2) weeks

Rigid Gas Permeable Lenses
(worn for less than 20 years)

At least four (4) weeks

At least six (6) weeks

At least six (6) weeks

Rigid Gas Permeable Lenses
(worn for 20-30 years)

At least four (4) weeks

At least six (6) to eight (8) weeks

At least six (6) to eight (8) weeks

Rigid Gas Permeable Lenses
(worn for more than 30 years)

At least four (4) weeks

At least 12 weeks

At least 12 weeks

Hard Lenses
(toric and true/Polymethyl methacrylate)

At least four (4) weeks

At least 12 weeks

At least 12 weeks

According to medical evidence, the likelihood of enhancement is decreased the longer a patient has not worn their contact lenses prior to their procedure. In most cases, the minimum length of time recommended for contact lens removal is sufficient. However, the rate at which your cornea can change in this time varies from person to person. If your cornea is still in adjustment at your pre-operative evaluation, you will be required to reschedule your appointment to a later date. Please note that Coal Harbour Eye Centre will not reimburse time off work, hotel expenses, airline tickets or any other expenses incurred due to rescheduling.

1A minimum of three to seven days without soft contact lenses prior to the pre-operative appointment or surgery is sufficient for the majority of patients. On rare occasions during pre-op exams, we have noticed that patients’ eyes are red and irritated from inflammation. These symptoms occur when contact lenses are worn for long periods of time. The surgeon may request a second evaluation with contact lenses removed for a minimum of one week before surgery is booked. The surgeon may also prescribe anti-inflammatory drops before surgery can be performed. Although this is uncommon, it is important to be aware of this possibility happening prior to your surgery.