1. Can I claim medical expenses for prescription eyeglasses bought online? Also, can I claim non-prescription reading glasses?

Prescription eyeglasses can be claimed as a medical expense. However, you must have the receipt and prescription and be able to input the price of the prescription lenses separate from the price of the frames on your return. 
Non-prescription glasses or reading glasses cannot be claimed as medical expenses.

Information on Vision Devices, as per Canada Revenue Agency:
Details of medical expenses - Canada.ca

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Yes, you can claim for prescription eyeglasses, it does not matter whether it was bought online or from a shop as long as you have a prescription and a receipt for your purchase. In the case of non-prescription reading glasses, you can not claim tax deductions. 

To enter medical expenses on your return follow the steps outlined below:

1. Sign in to your return.
2. Select Find (or the magnifying glass icon) in the top right corner of the page.
3. Type Medical Expenses in the Find Window and select Medical Expenses Profile and click on Go.
4. From the available options select the one which applies to you and click on Continue.
5. In the Medical Expenses window, TurboTax will display the minimum amount of eligible medical expenses which is required to generate a tax benefit. Click on Enter New Medical Expense.
6. In the Medical Expenses window, you can either choose to enter detailed medical expenses (click on the + Add Medical Receipt, in the Medical Expenses Receipt # 1, enter the required details, and click on Enter New Medical Expense, and Continue until you are done.) or a total of your medical expense for the year (Enter the total amount under the heading Enter Medical Expenses Total Amount). Click on Continue.
7. On the Medical Expense Summary page, click Enter New Medical Expense if you wish to enter more medical expenses or click on Done With Medical Expenses if you are done entering your medical expenses.
8. On the Medical Expense Claim page, you can choose to claim or not to claim, and even determine the starting and ending date for your claim period. After doing so, click on Continue to save your entries. You are done entering your medical expenses including your premium for medical insurance.

For more information visit our TurboTax FAQ- How do I enter my medical expenses?  

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