# K172728: Applanation tonometer AT-1

- Pathway: 510(k) (Traditional)
- Applicant: Takagi Seiko Co., Ltd.
- Decided: Oct 17, 2017 after 36 days
- Product code: HKY (Tonometer, Manual)
- Device class: 2
- Regulation: 21 CFR 886.1930
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K981432 (1999). 1 ancestor in all.
No later device cites it as a predicate yet.
0 of 2 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K981432: Goldman Manual Tonometer, Golden Vision, Inc. (1999) Summary page 4.

## Indications for use
The Applanation Tonometer AT-1 is indicated to measure intraocular pressure for use as an aid in glaucoma screening and diagnosis.

Source page: https://510kreport.com/device/K172728
Methodology: https://510kreport.com/methodology