Retinoscopes in Canada vs the US: Which Class Applies?

Quick facts

• A retinoscope measures the refraction of the eye by illuminating the retina and observing the movement of the light on the retinal surface.
• United States: 21 CFR 886.1780 splits the device by power source. The AC-powered retinoscope is Class II with special controls; the battery-powered retinoscope is Class I with general controls.
• The same section also exempts the battery-powered form from the current good manufacturing practice requirements of the quality system regulation, with the exception of the records provision and the complaint files provision.
• Canada: there is no named entry, and Rule 10(1) of Schedule 1 to the Medical Devices Regulations, SOR/98-282 produces Class II for both forms, because the rule does not look at the power source.
• The result is a one-class gap on a cordless instrument: the same battery-powered retinoscope is Class I in the United States and Class II in Canada.
• Canadian regulation text used here is current to 2026-09-21 and last amended 2026-06-17, as stated on the official consolidation.

A retinoscope is a familiar object in a refraction lane, and it is a good illustration of a class that turns on an attribute rather than on a purpose. The American code decided that the power source changes how much oversight the device needs, and wrote that decision into the section. Canada did not make that decision at all, so the same cordless instrument that is a Class I device across the border is a Class II device here. This article sets out both routes, the neighbouring refraction devices, and what a clinic should hold on file.

What does a retinoscope do, in the words of each code?

The American identification paragraph fixes both the anatomy and the method. Section 886.1780(a) describes a retinoscope as an AC-powered or battery-powered device intended to measure the refraction of the eye by illuminating the retina and noting the direction of movement of the light on the retinal surface and of the refraction by the eye of the emergent rays.

Two features of that sentence matter for classification. The device is defined by measuring refraction, and the method is optical — the examiner reads the behaviour of light rather than a number produced by a sensor.

Canada writes no comparable paragraph. The class comes from the general definitions and from Rule 10:

• Active device — a device that depends for its operation on a source of energy other than energy generated by the human body or gravity.
• Active diagnostic device — an active device used for the purpose of diagnosis or monitoring, which is the category Rule 10 classifies.
• Rule 10(1) — an active diagnostic device that supplies energy for the purpose of imaging or monitoring physiological processes is classified as Class II.

A retinoscope depends on a lamp and a power source, and it supplies light so that a physiological property can be observed. Under Rule 10(1) the class is Class II, and the rule reaches that answer for a corded and a cordless unit alike.

How does the retinoscope class differ between Canada and the United States?

This is the clearest power-source split in the ophthalmic code.

Item	Canada	United States
AC-powered retinoscope	Rule 10(1), Class II	886.1780(b)(1), Class II with special controls
Battery-powered retinoscope	Rule 10(1), Class II	886.1780(b)(2), Class I with general controls
Basis for the class	Intended use and the supply of energy for imaging or monitoring	Power source, written into the section
Premarket notification	No named entry to exempt	Both forms exempt subject to 886.9
Quality system position	No carve-out written for the instrument	Battery-powered form exempt from part 820 except records and complaint files
Where the classes converge	Class II	Class II for the corded unit only

The American text is explicit about the second form. The section states that Class I applies to the battery-powered device, that it is exempt from premarket notification subject to section 886.9, and that it is also exempt from the current good manufacturing practice requirements of the quality system regulation in part 820, with the exception of the records provision and the complaint files provision.

That last sentence is worth pausing on. It does not say the battery-powered retinoscope is unregulated. It says that a defined slice of the manufacturing requirements does not apply, while the general controls — including the record-keeping and complaint provisions named in the carve-out — still do. A manufacturer reading only the class would miss the carve-out; a buyer reading only the class would miss it too.

Canada has no equivalent sentence, because Canada classifies the instrument by rule and does not write instrument-specific exemptions into the schedule.

Which refraction devices sit near the retinoscope in each code?

A refraction lane holds several instruments that do different jobs, and the two codes group them differently.

Device	Canada	United States
Retinoscope	Rule 10(1), Class II	886.1780, Class I (battery) or Class II (AC)
Ophthalmoscope	Rule 10(1), Class II	886.1570, Class II
Pupillometer	Rule 10(1), Class II	886.1700, Class I
Ophthalmic refractometer	Rule 12, Class I	886.1760, Class I
Manual refractor, including a phoropter	Rule 7(1), Class I	886.1770, Class I
Slit-lamp biomicroscope	Rule 10(1), Class II	886.1850, Class II

Two patterns stand out. The first is that the American code distinguishes passive optical instruments from powered ones. A manual refractor carries no energy source of its own in the sense the definitions use, and both countries treat it as Class I. A retinoscope does carry one, and the American code then asks a further question — which power source — that Canada never asks.

The second is that Canada's Rule 10(1) is broad enough to cover the whole shelf of powered diagnostic instruments, so the Canadian answers in the middle of that table are uniform while the American answers are not.

Do Canada and the United States treat a cordless instrument differently?

They do, and a cordless retinoscope is the clearest example.

In the United States the cordless form is deliberately placed one class below the corded form. The section does this in two numbered subparagraphs, and the drafting makes the intent plain: the power source is treated as a proxy for risk and for the maturity of the technology.

In Canada the power source is not part of the classification question at all. Rule 10(1) asks whether the device is active and whether it supplies energy for imaging or monitoring. A cordless retinoscope answers both questions the same way a corded one does, so both are Class II.

For a clinic that buys both a corded and a cordless unit, or that buys one model in each country, the practical consequence is not how the instrument is used. It is what documentation has to exist on the supply side before the instrument may be placed on the market, and that documentation is produced by the manufacturer rather than by the clinic.

A buyer who wants to check the position of a specific model can look it up in the openFDA device classification API or the FDA classification database, and the Canadian class follows from the rule rather than from a lookup.

What should a clinic keep on file for a retinoscope?

Six items, most of them supplied by the maker.

• The model and its power source. Because the American class turns on the power source, the record should say which form is held.
• The maker's intended use statement. Both countries classify by intended use, and the statement is the anchor for the class.
• The licence or clearance position. In Canada, the class and licence status; in the United States, whether the form is within the exemption.
• The instruction for use. Cleaning and disinfection instructions for the instrument body and any surface that contacts the patient.
• The lamp and battery record. Consumable parts that affect function belong with the device file.
• The patient-contact barrier record. Where a disposable barrier is used at the eyepiece, its record links the instrument to the day's list.

Which consumables does an eye clinic restock alongside its refraction instruments?

A refraction lane restocks barriers, chart cards, paper and cleaning supplies on the same cycle as its instruments. For practices buying at case level, the wholesale ordering page sets out account and case terms, and the B2B wholesale collection lists the lines held for institutional buyers. The exam table paper roll covers the couch in the testing lane, the Snellen and Amsler chart set covers the acuity and field cards used alongside refraction, and practices that want to see the monitoring and consumable lines together can start with the sterilization monitoring collection or the biological indicator 5-pack trial.

Sources

1. 21 CFR 886.1780, retinoscope
2. 21 CFR 886.9, limitations of exemptions
3. 21 CFR 886.1570, ophthalmoscope
4. 21 CFR 886.1700, pupillometer
5. 21 CFR 886.1760, ophthalmic refractometer
6. 21 CFR 886.1770, manual refractor
7. 21 CFR 886.1850, slit-lamp biomicroscope
8. 21 CFR 820.180, general requirements concerning records
9. 21 CFR 820.198, complaint files
10. Medical Devices Regulations, SOR/98-282, full text and Schedule 1
11. Health Canada, medical devices
12. openFDA device classification API
13. FDA device classification database
14. ISO 15004-1:2020, ophthalmic instruments, fundamental requirements
15. College of Optometrists of Ontario, standards of practice
16. Canadian Association of Optometrists, eye health library
17. World Health Organization, blindness and visual impairment
18. Canadian Centre for Occupational Health and Safety, OSH answers
19. US OSHA bloodborne pathogens standard, 1910.1030
20. CLSI standards

Related reading

• Eye Charts in Canada vs the US: Which Optotype Standard Applies
• Near Vision Reading Cards in Canada vs the US
• Eye Clinic Consumables: Gloves, Swabs and Tape for Optometry

CliniEco Medical supplies eye care, laboratory and clinic consumables of the kind described in this article. MDEL #35334. This article is written for clinic, procurement and infection-control professionals and is not clinical guidance; refraction technique and instrument selection belong to the treating professional and the provincial requirements that apply to the practice.

Frequently Asked Questions

What class is a retinoscope in the United States?

It depends on the power source. Under 21 CFR 886.1780 the AC-powered retinoscope is Class II with special controls, and the battery-powered retinoscope is Class I with general controls. Both forms are exempt from premarket notification subject to the limitations in 21 CFR 886.9.

Is the battery-powered retinoscope exempt from manufacturing requirements in the United States?

Partly. The section exempts the Class I battery-powered device from the current good manufacturing practice requirements of the quality system regulation in part 820, with the exception of the records provision and the complaint files provision. Those two provisions still apply.

What class is a retinoscope in Canada?

Class II. There is no named entry for the instrument, so the class is derived from Rule 10(1) of Schedule 1 to the Medical Devices Regulations, which classifies an active diagnostic device that supplies energy for the purpose of imaging or monitoring physiological processes as Class II.

Why is the class different for the same cordless instrument?

Because one code splits on power source and the other does not. The United States writes two numbered subparagraphs into 886.1780, placing the AC-powered and battery-powered forms in different classes. Canada's Rule 10(1) classifies by intended use and the supply of energy, so both forms reach the same class.

Does the Canadian rule look at the power source?

No. Rule 10(1) asks whether the device is an active diagnostic device and whether it supplies energy for the purpose of imaging or monitoring physiological processes. Nothing in the rule turns on whether that energy comes from a cord or a battery.

Do Canada and the United States classify a manual refractor the same way?

Both treat it as Class I, but by different routes. The United States names it in 21 CFR 886.1770 as a manual, non-powered refractor, and Canada reaches Class I through the residual rule for non-invasive devices because a manual instrument carries no energy source of its own.