Cleared Traditional

K203850 - CATS®-D Tonometer Prism (FDA 510(k) Clearance)

Class II Ophthalmic device cleared through predicate-based substantial equivalence - typically does not require clinical trials.

K203850 · Cats Tonometer, LLC · Ophthalmic device
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Jun 2021
Decision
165d
Days
Class 2
Risk

K203850 is an FDA 510(k) clearance for the CATS®-D Tonometer Prism. Classified as Tonometer, Manual (product code HKY), Class II - Special Controls.

Submitted by Cats Tonometer, LLC (Tucson, US). The FDA issued a Cleared decision on June 14, 2021 after a review of 165 days - an extended review cycle.

This device falls under the Ophthalmic FDA review panel, regulated under 21 CFR 886.1930 - the FDA ophthalmic device framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Ophthalmic review framework, consistent with the majority of Class II 510(k) submissions.

View all Cats Tonometer, LLC devices

Submission Details

510(k) Number K203850 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received December 31, 2020
Decision Date June 14, 2021
Days to Decision 165 days
Submission Type Traditional
Review Panel Ophthalmic (OP)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
55d slower than avg
Panel avg: 110d · This submission: 165d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

Device Classification

Product Code HKY Tonometer, Manual
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 886.1930
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Ophthalmic devices follow this clearance model.

Regulatory Peers - HKY Tonometer, Manual

All 55
Devices cleared under the same product code (HKY) and FDA review panel - the closest regulatory comparables to K203850.
iCare ST500 (TA04)
K241447 · Icare Finland OY · Sep 2024
Tono-Vera® Tonometer and Ocu-Dot® Tonometer Probes (16305, 16306, 16318)
K233516 · Reichert, Inc. · May 2024
CATS-L Tonometer™ Prism
K234037 · Cats Tonometer, LLC · Feb 2024
Applanation Tonometer HT-5000
K232143 · Huvitz Co., Ltd. · Oct 2023
iCare IC200
K220852 · Icare Finland OY · Oct 2022
iCare HOME2
K211355 · Icare Finland OY · Jan 2022