Yes, cataract surgery may qualify as a valid medical expense for tax purposes.
According to the Canada Revenue Agency (CRA) and TurboTax, eye surgery (such as Lasik or a similar procedure) is tax deductible when it is not for cosmetic purposes only. It is the amount paid to a medical practitioner or a public or licensed private hospital.
Keep in mind the Canada Revenue Agency (CRA) might require documents to support your medical expenses claim later. The documents include a receipt, prescription, or certification in writing.
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