# HNH: Ring, Ophthalmic (Flieringa)

- Device class: 1; regulation: 21 CFR 886.4350; FDA's rule: 510(k) exempt
- FDA decisions: 7
- Recalls: 0 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026; MAUDE to Sep 30, 2026

## Decisions per year (last 10)
- 1984: 1
- 1985: 1
- 1986: 1
- 1990: 1
- 1991: 3

## Most-cited predicates
- K902496: Landers Vitrectomy Lens Ring W/Infusion (1990), cited by 1

Source page: https://510kreport.com/product-code/HNH
Data by year (CSV): https://510kreport.com/product-code/HNH.csv