In Australia, prescription safety glasses can be tax-deductible if they are primarily used for work-related purposes and are not reimbursed by your employer or covered by private health insurance. The key criteria for claiming a tax deduction for prescription safety glasses in Australia include:

1. Work-Related Requirement: The glasses must be required for your job to protect your eyes from specific occupational hazards. They should not be for general, everyday use.

2. Receipt and Proof of Purchase: You need to keep a record of your receipt and proof of purchase for the prescription safety glasses.

3. No Reimbursement: Your employer should not reimburse you for the cost of the glasses, and they should not be covered by any private health insurance policies.

4. Income Tax Return: You can claim the cost of the prescription safety glasses as a deduction when you lodge your income tax return. This usually occurs annually.

It’s important to note that tax laws and regulations can change over time, so it’s advisable to consult with a qualified tax professional or accountant for the most up-to-date information and to ensure that your specific situation meets the necessary criteria for a tax deduction. They can provide guidance tailored to your circumstances and help you maximize any potential deductions.