Cleared Traditional

SCHIOTZ TONOMETER SPEC. 5 STRAIGHT, INCLINED, 3INCLINED SCALE (K945541) - FDA 510(k) Clearance

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

K945541 · Rudolf Riester GmbH & Co. KG · Ophthalmic device
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May 1995
Decision
179d
Days
Class 2
Risk

K945541 is an FDA 510(k) clearance for the SCHIOTZ TONOMETER SPEC. 5 STRAIGHT, INCLINED, 3INCLINED SCALE. Classified as Tonometer, Manual (product code HKY), Class II - Special Controls.

Submitted by Rudolf Riester GmbH & Co. KG (D-72417 Jungingen, DE). The FDA issued a Cleared decision on May 8, 1995 after a review of 179 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 Rudolf Riester GmbH & Co. KG devices

Submission Details

510(k) Number K945541 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received November 10, 1994
Decision Date May 08, 1995
Days to Decision 179 days
Submission Type Traditional
Review Panel Ophthalmic (OP)
Summary Statement
Third-party Review No - reviewed directly by FDA
Regulatory Context
Review time vs. panel average
69d slower than avg
Panel avg: 110d · This submission: 179d
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.