All About Technology at OPSM. OPSM’s Ultra Wide Digital Retinal Scan sees over 4 times more of your eye than a standard retinal scan*. For a limited time at OPSM, get $100 off prescription glasses or prescription sunglasses**. Hurry offer ends 18 October. *Versus a standard retinal scan of 45 degrees. Fees apply. Ask your Optometrist if this scan is right for you. **Minimum spend $350. Brand exclusions and further T&Cs apply, see website for details. Offer ends 18/10/23.