7 doctors weighed in:
Why do you have to leave out your contacts a week before a lasik consultation?
7 doctors weighed in

Dr. Andrew Shatz
Ophthalmology
2 doctors agree
In brief: Best results
A contact lens temporarily reshapes the cornea's curvature.
Lasik permanently reshapes the cornea; but if the cornea is treated prior to having returned to its normal curvature, the prescription will change as it does so. Depending on the type of contacts (soft, toric, rigid), it can take between a week and several months for the cornea's curvature to return to normal.

In brief: Best results
A contact lens temporarily reshapes the cornea's curvature.
Lasik permanently reshapes the cornea; but if the cornea is treated prior to having returned to its normal curvature, the prescription will change as it does so. Depending on the type of contacts (soft, toric, rigid), it can take between a week and several months for the cornea's curvature to return to normal.
Dr. Andrew Shatz
Dr. Andrew Shatz
Thank
Dr. Joseph Barakeh
Ophthalmology
2 doctors agree
In brief: Accurate measurement
Contacts deform the shape of the cornea while they are in your eye, and the effect lasts for some time after you take the contacts out (days for soft, weeks for rigid).
Good lasik results depend on an accurate measurement of the true natural shape of your cornea, which can only be obtained after you have not had contact lenses in your eye for a week or longer.

In brief: Accurate measurement
Contacts deform the shape of the cornea while they are in your eye, and the effect lasts for some time after you take the contacts out (days for soft, weeks for rigid).
Good lasik results depend on an accurate measurement of the true natural shape of your cornea, which can only be obtained after you have not had contact lenses in your eye for a week or longer.
Dr. Joseph Barakeh
Dr. Joseph Barakeh
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Dr. Jay Bradley
Ophthalmology - LASIK Surgery
In brief: LASIK consult
To allow the effect of the contacts to resolve prior to your evaluation.
I prefer 2 weeks with soft lenses, 4 weeks for toric lenses, and much longer fir hard lenses.

In brief: LASIK consult
To allow the effect of the contacts to resolve prior to your evaluation.
I prefer 2 weeks with soft lenses, 4 weeks for toric lenses, and much longer fir hard lenses.
Dr. Jay Bradley
Dr. Jay Bradley
Thank
Dr. Federico Mattioli
Ophthalmology - LASIK Surgery
In brief: Acquire good data
Contact lenses can affect the measurements taken during the lasik exam, especially if you sleep in them or use hard contact lens types.
They can cause a moulding effect on the cornea, which is exactly where lasik treatment occurs. Keeping out of contact lenses allows the cornea to return to its natural shape, providing better measurements and therefore better treatment results.

In brief: Acquire good data
Contact lenses can affect the measurements taken during the lasik exam, especially if you sleep in them or use hard contact lens types.
They can cause a moulding effect on the cornea, which is exactly where lasik treatment occurs. Keeping out of contact lenses allows the cornea to return to its natural shape, providing better measurements and therefore better treatment results.
Dr. Federico Mattioli
Dr. Federico Mattioli
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