Yes, you can buy sunglasses with your , but typically only if they are prescription sunglasses . The IRS classifies corrective lenses as a medical expense because they address a vision impairment. Eligible vs. Ineligible Sunglasses
Whether you can use your HSA funds depends entirely on the "medical necessity" of the eyewear: How To Pay For Sunglasses With an HSA can i buy sunglasses with hsa