Cleared Traditional

K900477 - WOODLYN CLASSIC SLIT LAMP MODEL SMM

K900477 is an FDA 510(k) clearance for WOODLYN CLASSIC SLIT LAMP MODEL SMM, manufactured by Woodlyn, Inc.. The device is a Class 2 Ophthalmic device with product code HJO cleared through the Traditional 510(k) pathway after a 20-day FDA review.

K900477 · Woodlyn, Inc. · Ophthalmic device
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Feb 1990
Decision
20d
Days
Class 2
Risk

K900477 is an FDA 510(k) clearance for the WOODLYN CLASSIC SLIT LAMP MODEL SMM. Classified as Biomicroscope, Slit-lamp, Ac-powered (product code HJO), Class II - Special Controls.

Submitted by Woodlyn, Inc. (Arlington Heights, US). The FDA issued a Cleared decision on February 21, 1990 after a review of 20 days - a notably fast clearance cycle.

This device falls under the Ophthalmic FDA review panel, regulated under 21 CFR 886.1850 - 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: Fast-track predicate clearance. Standard predicate reliance. The short review cycle indicates strong predicate alignment - the FDA found sufficient equivalence without extended technical review.

View all Woodlyn, Inc. devices

FDA 510(k) Submission Details - K900477

510(k) Number K900477 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received February 01, 1990
Decision Date February 21, 1990
Days to Decision 20 days
Submission Type Traditional
Review Panel Ophthalmic (OP)
Summary -
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
90d faster than avg
Panel avg: 110d · This submission: 20d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

HJO Device Classification - Class 2, Special Controls

Product Code HJO Biomicroscope, Slit-lamp, Ac-powered
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 886.1850
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 - HJO Biomicroscope, Slit-lamp, Ac-powered

All 73
Devices cleared under the same product code (HJO) and FDA review panel - the closest regulatory comparables to K900477.
BURTON SLIT LAMP
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K910980 · Site Microsurgical Systems, Inc. · May 1991
WOODLYN SLIT LAMP MODEL HR-1
K900476 · Woodlyn, Inc. · Feb 1990
ZEISS 40 SL/P PHOTO SLIT LAMP
K874160 · Carl Zeiss, Inc. · Jan 1988
OCS 100 (OCULAR COMPARATOR SYSTEM)
K874220 · Ocular Instruments, Inc. · Dec 1987
BAUSCH & LOMB CSL-1000 SLIT LAMP
K862515 · Bausch & Lomb, Inc. · Jul 1986