Browse hierarchy: [Ophthalmic (OP)](/submissions/OP) → [Subpart B — Diagnostic Devices](/submissions/OP/subpart-b%E2%80%94diagnostic-devices) → [21 CFR 886.1640](/submissions/OP/subpart-b%E2%80%94diagnostic-devices/886.1640) → HLW — Preamplifier, Battery-Powered, Ophthalmic

# HLW · Preamplifier, Battery-Powered, Ophthalmic

_Ophthalmic · 21 CFR 886.1640 · Class 2_

**Canonical URL:** https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW

## Overview

- **Product Code:** HLW
- **Device Name:** Preamplifier, Battery-Powered, Ophthalmic
- **Regulation:** [21 CFR 886.1640](/submissions/OP/subpart-b%E2%80%94diagnostic-devices/886.1640)
- **Device Class:** 2
- **Review Panel:** [Ophthalmic](/submissions/OP)
- **3rd-party reviewable:** yes

## Identification

An ophthalmic preamplifier is an AC-powered or battery-powered device intended to amplify electrical signals from the eye in electroretinography (recording retinal action currents from the surface of the eyeball after stimulation by light), electrooculography (testing for retinal dysfunction by comparing the standing potential in the front and the back of the eyeball), and electromyography (recording electrical currents generated in active muscle).

## Classification Rationale

Class II.

## Recent Cleared Devices (3 of 3)

| Record | Device Name | Applicant | Decision Date | Decision |
| --- | --- | --- | --- | --- |
| [K900279](https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW/K900279.md) | OCULINUM INJECTION AMPLIFIER | Oculinum, Inc. | Feb 9, 1990 | SESE |
| [K900098](https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW/K900098.md) | MONOPOLAR NEEDLE ELECTRODE | Oculinum, Inc. | Feb 9, 1990 | SESE |
| [K854793](https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW/K854793.md) | MONOPOLAR INJECTION NEEDLE ELECTRODE | Oculinum, Inc. | Feb 18, 1986 | SN |

## Top Applicants

- Oculinum, Inc. — 3 clearances

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**Source:** [https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW](https://fda.innolitics.com/submissions/OP/subpart-b%E2%80%94diagnostic-devices/HLW)

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