Create a "No Questions" asked 1 year extended warranty.

Charge $25.00 for this product.

Include a deductible based on the cost you paid for the lenses.

If they break their frame, no problem just go pick a new frame.

With the EyeClub frames your costs are below $8.00,  the deductible pays for the lens, plus you will sell them a new extended warranty.

Historically 7% will use the warranty, the rest is profit and of the ones using the warranty your still cash flow positive.  You also create a great word of mouth advertising for how great your office treats patients.

Win Win!