Heating Eye Pads in Canada vs the US: Which Class Applies?

Quick facts

• United States: the class follows the mechanism, not the treatment. A powered heating pad is Class II (special controls) under 21 CFR 890.5740 because it provides dry heat therapy for body surfaces by electrical means.
• United States: the non-powered forms sit lower. A gel cold pack is Class I under 21 CFR 890.5700, and a disposable hot or cold chemical pack is Class I under 21 CFR 890.5710, except when intended for use on infants.
• United States: a water circulating pack is Class II (special controls) under 21 CFR 890.5720 because it pumps heated or chilled water.
• United States: the eyelid-specific device has its own entry. An eyelid thermal pulsation system is Class II (special controls) under 21 CFR 886.5200, for adult patients with chronic cystic conditions of the eyelids including meibomian gland dysfunction.
• Canada: there is no named entry for a heating eye pad in Schedule 1 to the Medical Devices Regulations, SOR/98-282. A non-powered compress is Class I under Rule 7(1); a powered compress is an active therapeutic device and Class II under Rule 9(1).
• Canadian regulation text used here is current to 2026-09-21 and last amended 2026-06-17, as stated on the official consolidation.

A heating eye pad is bought for a symptom — dry eye, a stye, a blepharitis routine — and that symptom is what the buyer thinks is being regulated. Neither country regulates the symptom. The American route sorts the product by how it produces heat, and the Canadian route sorts it by whether the device is active and what it does to the body. The two routes land on the same class for a powered unit and on the same class for a gel compress, but they arrive there through completely different instruments, and the paperwork a clinic keeps differs accordingly.

How does a heated eye compress differ between Canada and the United States?

The difference is the sorting key, and it produces different answers for products that look identical on a shelf.

In the United States the working question is: what is the heat source? A compact fabric envelope containing a hydrated pliable silicate gel that forms to the body and provides cold therapy is a cold pack, Class I, exempt from premarket notification. A sealed plastic bag incorporating chemicals that provide hot or cold therapy on activation is a hot or cold disposable pack, also Class I, and the exemption is withdrawn when the device is intended for use on infants. A device that pumps heated or chilled water through a plastic bag is a water circulating hot or cold pack, Class II with special controls. An electrical device that provides dry heat therapy and maintains an elevated temperature is a powered heating pad, Class II with special controls.

Canada does not ask about the heat source. Schedule 1 to the Medical Devices Regulations asks whether the device is invasive, non-invasive or active. A non-powered compress that sits on closed eyelids is non-invasive, so Rule 7(1) reaches it and the class is Class I. Add a power supply and the device becomes active; an active therapeutic device intended to administer or withdraw energy to or from the body is Class II under Rule 9(1).

That single change of key produces a buyer-visible result. The American system has four named entries for thermal products and a fifth for the eyelid-specific device, and the buyer picks the entry by reading the maker's description of the mechanism. The Canadian system has no thermal entry at all, and the buyer picks the class by answering one question: is it powered?

Item	Canada	United States
Named entry for a heating eye pad	None in Schedule 1	890.5740 powered heating pad; 886.5200 eyelid thermal pulsation system
Sorting key	Active or non-active; effect on the body	Mechanism that produces heat
Non-powered gel compress	Rule 7(1), Class I	890.5700, Class I
Disposable chemical pack	Rule 7(1), Class I	890.5710, Class I; exemption withdrawn for infant use
Powered heating compress	Rule 9(1), Class II	890.5740, Class II, special controls
Water circulating unit	Rule 9(1), Class II	890.5720, Class II, special controls

Which rules govern a powered eye compress in Canada and the United States?

For the powered unit the two countries agree on the class and disagree on almost everything behind it.

In the United States, 890.5740 describes a powered heating pad as an electrical device that provides dry heat therapy for body surfaces and is capable of maintaining an elevated temperature during use, and places it in Class II with special controls. The special controls are the route by which the maker demonstrates safety, and they are the reason a powered pad is not simply sold like a hot water bottle. Adjacent to that entry is 886.5200, which describes an eyelid thermal pulsation system as an electrically powered device for localized heat and pressure therapy to the eyelids in adult patients with chronic cystic conditions of the eyelids, including meibomian gland dysfunction, and lists special controls that include validation of electromagnetic compatibility and of the temperature and pressure safeguards.

In Canada, Rule 9(1) does the same job with one sentence: subject to subrules (2) and (3), an active therapeutic device, including any dedicated software, intended to be used to administer or withdraw energy to or from the body is classified as Class II. The rule does not mention eyelids, moisture or temperature. Rule 12 then catches everything active that Rule 9 does not: any other active device is Class I.

There is one further Canadian route that a buyer should not miss. Rule 7(2)(b) lifts a non-invasive device to Class II when it is intended to be connected to an active device that is classified as Class II, III or IV. A controller, a remote or a dock that is marketed as part of a powered system can therefore carry the class of the system it plugs into, which is why the accessory and the host device should be bought and documented together.

Device form	United States	Canada
Reusable gel compress, non-powered	890.5700, Class I	Rule 7(1), Class I
Disposable chemical hot or cold pack	890.5710, Class I	Rule 7(1), Class I
USB or mains powered eye mask	890.5740, Class II, special controls	Rule 9(1), Class II
Water circulating unit	890.5720, Class II, special controls	Rule 9(1), Class II
Eyelid heat and pressure system	886.5200, Class II, special controls	Rule 9(1), Class II
Accessory connected to a Class II host	Not a separate entry; the host entry governs	Rule 7(2)(b), Class II

What should a clinic check before buying a moist heat eye compress?

Six checks, and the first two decide the paperwork for the next five years.

• The mechanism. Whether the product produces heat chemically, by retained warmth, or from a power supply. That answer decides the American class and, in Canada, whether Rule 7(1) or Rule 9(1) applies.
• The claim on the label. Whether the maker describes the product as dry heat therapy, as a warm compress for comfort, or as therapy for meibomian gland dysfunction. A claim about eyelid conditions is a claim about a disease, and it changes what evidence a buyer should expect to see.
• The temperature control. For a powered unit, whether the temperature is limited and whether the setting is visible. The American special controls for 886.5200 and 890.5740 both turn on validated temperature safeguards, which is the buyer-visible translation of an internal requirement.
• The power source and its accessories. Whether the controller, cable or dock is supplied by the same maker, because an accessory connected to a Class II host device can carry that class in Canada through Rule 7(2)(b).
• The cleaning instruction. Whether the surface that touches the closed eyelid is wipeable, washable or single-patient, since the compress is reused on intact skin and the instruction is what defines the reprocessing step.
• The intended-user statement. Whether the product is sold for adult use, for paediatric use, or for both, both because the eyelid entry is written for adults and because the American disposable pack exemption is withdrawn for infant use.

Which consumables sit beside a dry eye treatment point?

A dry eye treatment point is stocked as a routine rather than as a procedure: the compress itself, the wipes and swabs used around the lids, and the eye care consumables that share the drawer. For clinics 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 USB heated eye mask with three temperature settings covers the powered compress described above, and the reusable moist heat eye compress covers the non-powered form. Sites that also run a sterilizer can pair the eye care collection with the biological indicator 5-pack trial as a starting point.

Sources

1. 21 CFR 890.5740, powered heating pad
2. 21 CFR 890.5720, water circulating hot or cold pack
3. 21 CFR 890.5710, hot or cold disposable pack
4. 21 CFR 890.5700, cold pack
5. 21 CFR 886.5200, eyelid thermal pulsation system
6. 21 CFR 886.4750, ophthalmic eye shield
7. Medical Devices Regulations, SOR/98-282, full text and Schedule 1
8. ISO 14971:2019, risk management of medical devices
9. ISO 10993-1:2018, biological evaluation of medical devices
10. ISO 15004-1:2020, ophthalmic instruments
11. ISO 15189:2022, medical laboratories
12. openFDA device classification API
13. FDA device classification database
14. Health Canada, medical devices
15. Canadian Ophthalmological Society
16. Canadian Association of Optometrists, eye health library
17. College of Optometrists of Ontario, standards of practice
18. American Academy of Ophthalmology, eye exam frequency
19. World Health Organization, blindness and visual impairment
20. CCOHS, OSH answers

Related reading

• Eye Masks in Canada vs the US: Warm Compress and Dry Eye
• Eye Wash Stations in Canada vs the US: ANSI Z358.1
• Are USB Heated Eye Masks Safe to Sleep In in Canada

CliniEco Medical supplies eye care, laboratory and clinic consumables of the kind described in this article. MDEL #35334. This article is written for clinic, optometry and procurement professionals and is not clinical guidance; the treatment of dry eye, blepharitis or any eyelid condition belongs to the clinician and to the requirements that apply to the practice.

Frequently Asked Questions

What class is a powered heating eye pad in the United States?

Class II with special controls under 21 CFR 890.5740, which covers an electrical device that provides dry heat therapy for body surfaces and maintains an elevated temperature during use. A device marketed for localized heat and pressure therapy to the eyelids for meibomian gland dysfunction falls under 21 CFR 886.5200, also Class II with special controls.

What class is a non-powered eye compress in the United States?

Class I. A gel pack that forms to the body and provides cold therapy is a cold pack under 21 CFR 890.5700, and a disposable chemical hot or cold pack is Class I under 21 CFR 890.5710, with the exemption withdrawn when the device is intended for use on infants.

How does Canada classify a heating eye pad?

Canada has no named entry for a heating eye pad. A non-powered compress is non-invasive and Class I under Rule 7(1); a powered compress is an active therapeutic device and Class II under Rule 9(1). An accessory intended to connect to a Class II, III or IV active device is Class II under Rule 7(2)(b).

Does the same eye compress fall into the same class in both countries?

For a powered compress, yes, both give Class II. For a non-powered gel compress, both give Class I. The agreement is not because the rules are the same; it is because the American mechanism-based entries and the Canadian active or non-active rule happen to produce the same answer for these two forms.

Why does the American system have so many thermal entries?

Because the American route classifies by mechanism. A gel pack, a disposable chemical pack, a water circulating unit and a powered pad each have their own entry in 21 CFR part 890, and the eyelid-specific heat and pressure system has a separate entry in part 886. The buyer selects the entry by reading the maker's description of how the product produces heat.

What should be recorded for a powered eye compress?

The mechanism and the intended use claimed on the label, the temperature control and its settings, the power supply and any supplied accessory, the cleaning instruction for the surface that contacts the closed eyelid, and the maker's statement of the patient group the device is sold for.