Quick facts
- An intraocular lens (IOL) is a device made of glass or plastic that is implanted to replace the natural lens of an eye.
- United States: an intraocular lens has a named entry at 21 CFR 886.3600, and the section places it in Class III; a premarket approval or a completed product development protocol has been required since May 28, 1976.
- Canada: the Medical Devices Regulations, SOR/98-282 names no lens, and reaches Class III through Rule 1(3) of Schedule 1, which puts a surgically invasive device normally intended to remain in the body for at least 30 consecutive days in that class.
- The two countries land on the same class by different machinery: the United States names the device and Canada classifies it by rule.
- Both markets require a quality management system behind the licence: ISO 13485:2016 for the manufacturer, and ISO 14971:2019 for risk management.
- The entries and rule text below were checked against the current CFR text and the Regulations on 2026-10-08.
An intraocular lens is the small implant that goes into the capsular bag after the natural lens is removed. It is invisible to the patient and permanent to the eye, and it is the one ophthalmic device most clinics encounter only as a catalogue item on a surgical list rather than as a consumable on a shelf. The class it carries changes what its maker has to hold, what a buyer can ask for as evidence, and how the same device is filed on the two sides of the border. This article sets out how each country files an IOL, why the classes agree even though the rulebooks differ, and what a clinic or an eye-care buyer should be able to point at when the lens is ordered.
What is an intraocular lens?
The lens is a polymer optic, folded to pass through a small incision and unfolded inside the capsular bag, with haptics that hold it centred. It replaces the focusing power that the natural lens had, and it is designed to remain in the eye for the life of the patient. Some IOLs correct a single focal distance, some correct astigmatism as a toric optic, and some are shaped to give a range of vision. Every one of them is an implant, and an implant is treated differently from an instrument that rests on the cornea for a few seconds.
Because the lens is never removed, the rules that follow it are not rules about cleaning or reuse. They are rules about the material, the manufacturing process and the evidence that the optic behaves as claimed in the eye.
Which class does an intraocular lens carry in the United States?
In the United States the lens is a named Class III device. 21 CFR 886.3600 identifies an intraocular lens as a device made of materials such as glass or plastic intended to be implanted to replace the natural lens of an eye, states that the classification is Class III, and records that an approval under section 515 or a notice of completion of a product development protocol has been required since May 28, 1976. The openFDA device classification API lists the multifocal intraocular lens under product code MFK at Class III.
Class III in the United States means the maker goes through the premarket approval route, not the 510(k) route that applies to most ophthalmic instruments. A clinic that buys an IOL for an operating list is not the party that holds that approval, but the buyer can ask the manufacturer for the approval number and the special controls that sit with the entry.
Why does the same lens reach Class III in Canada?
Canada does not keep a list of named ophthalmic devices. Schedule 1 to the Regulations sets out classification rules, and the class falls out of the rule that fits the device. For a lens that is implanted and left in place, the relevant rule is Rule 1(3): a surgically invasive device that is normally intended to remain in the body for at least 30 consecutive days is classified as Class III. Rule 1(1) puts surgically invasive devices in Class II as the baseline, and Rule 1(3) lifts the long-stay device one class higher.
| Item | Canada | United States |
|---|---|---|
| Named entry | No entry names an intraocular lens | 21 CFR 886.3600 |
| Class | Class III, by Rule 1(3) | Class III |
| Basis of the class | The rule that fits an implant that stays in the body | The named entry the device is filed under |
| Product code | Not applicable | MFK (multifocal intraocular lens) |
| Premarket route | Device licence under section 32 for a Class III device | Premarket approval under section 515 |
| Quality system | CAN/CSA-ISO 13485 certificate behind the licence | Quality system regulation inspection |
A surgically invasive device is not only one that cuts. The rule reaches a device that penetrates the body through the surface of the eye or through a body orifice, and it reaches an implant that is placed inside the eye by a surgical step. The 30-day threshold in Rule 1(3) is what separates a temporary ocular device from a permanent one, and it is the reason a lens and a diagnostic contact lens do not share a class even though both touch the eye.
Does an intraocular lens need a licence in Canada?
Yes. A Class III device reaches the Canadian market through a device licence under section 32 supported by a quality management certificate to CAN/CSA-ISO 13485, and the manufacturer’s establishment must be licensed. A clinic that imports or distributes devices for resale in Canada holds a medical device establishment licence; the licence number for our own distribution operation is stated at the foot of this article. The obligation to hold the device licence sits with the manufacturer, not with the operating room.
For a buyer, the practical question is not who holds the licence but whether the lens on the shelf can be traced to one. An IOL that arrives in a plain inner pouch without a manufacturer, a lot number and a use-by date cannot be reconciled with a licence, and it should not be accepted into an operating list.
Which standards sit behind the lens?
The class says how the lens is regulated; the standards say how it has to behave. The ISO 11979 series covers ophthalmic implants and intraocular lenses in parts, dealing with vocabulary, optical properties and test methods, mechanical properties, and the labelling and information supplied with the lens. A lens bought for surgery should be described in the language of that series so that the optic, the haptics and the dioptric power can be compared with the surgical plan.
| Element | What the standard covers | Why it matters at the list |
|---|---|---|
| Optical properties | Power and image quality of the optic | A lens that does not match the biometry mis-focuses the eye |
| Mechanical properties | Resilience of the haptics and the optic | A haptic that deforms will not hold the lens centred |
| Vocabulary | Terms used on the label | The buyer and the surgeon must mean the same thing |
| Information supplied | Labelling and instructions | Traceability depends on the lot and the use-by date |
| Risk management | ISO 14971:2019 | The hazard file is what a recall is built from |
ISO 15004-1:2020 sets general requirements for ophthalmic instruments and sits alongside the 11979 series where a lens is tested with an instrument rather than on its own. A buyer who keeps the testing basis on file can compare one lens with another without repeating the surgical reasoning for every reorder.
What does the class change for an eye-care buyer?
The class changes the paperwork that follows the order and the evidence a buyer can ask for. A Class III implant in Canada and the United States is bought against a licence or an approval, and that means the manufacturer keeps the device master record, the lot traceability and the complaint file. When a recall is issued, the path back to the individual eye runs through the lot number on the lens and the operating record that cites it.
For a clinic, the class also decides what a generic substitute is. A lower-class lens cannot be swapped for the implant that was planned because the two devices are not the same device, and a reorder has to go back to the same maker. That is a procurement fact, not a formulary preference.
Where a clinic runs its own sterilising equipment for the instruments used in the same procedure, the monitoring side of that bench is separate from the lens and is handled by the indicator and spore-test lines rather than by the implant.
An implant is placed within a surgical lane that is stocked as a set. The post-operative eye patch set covers the eye after a lens is placed, and the smooth white exam table paper covers the headrest between patients. Clinics that also monitor their own steriliser pair the sterilization monitoring collection with the 24-hour biological indicator 50-pack. Multi-site groups ordering at case level use the wholesale ordering page, and the B2B wholesale collection lists the lines held for institutional buyers. Reselling? become a distributor.
Sources
- 21 CFR 886.3600, Intraocular lens
- openFDA device classification API
- Medical Devices Regulations, SOR/98-282, full text and Schedule 1
- Health Canada, medical devices
- ISO 11979-1, ophthalmic implants, intraocular lenses, vocabulary
- ISO 11979-2:2024, intraocular lenses, optical properties and test methods
- ISO 13485:2016, medical devices quality management
- ISO 14971:2019, risk management of medical devices
- ISO 15004-1:2020, ophthalmic instruments, general requirements
- Standards Council of Canada
- CSA Group
- US FDA, medical devices
- College of Optometrists of Ontario, standards of practice
- American Academy of Ophthalmology, eye health
- World Health Organization, blindness and visual impairment
- CCOHS, OSH answers
- Public Health Ontario, infection prevention and control
- Opto, eye health library
Where the lens record is kept
An implant that cannot be traced is an implant that cannot be recalled to the right patient. The printable implant and monitoring log gives a blank sheet with columns for the manufacturer, the product code, the lot number, the use-by date and the eye, so a recall notice can be matched to the person it concerns. The log generator on the same page sizes the sheet to the number of surgical lists a clinic runs in a week.
Every surgical list and every lens differs. Ask a compliance specialist and you will get a written answer specific to your equipment and province, with the regulation or standard it is based on cited.
Related reading
- Ophthalmic trial lens frames in Canada vs the US: which class
- Manual ophthalmic surgical instruments in Canada vs the US: which rules
- Eye shields in Canada vs the US: which device rules
CliniEco Medical supplies eye care, laboratory and dental consumables of the kind described in this article. MDEL #35334. This article is written for optometry, laboratory and procurement professionals and is not legal advice; the class of a device and the records kept by a clinic belong to the manufacturer and to the requirements that apply to it.
Frequently Asked Questions
Is an intraocular lens a regulated device?
Yes, in both countries. The United States names it as a Class III device at 21 CFR 886.3600, and Canada reaches Class III through Rule 1(3) of Schedule 1 to the Medical Devices Regulations because the lens is a surgically invasive device intended to remain in the body for at least 30 consecutive days.
Does an intraocular lens need a premarket approval in the United States?
The entry is Class III and records that an approval under section 515 or a completed product development protocol has been required since May 28, 1976. That is a premarket approval route rather than the 510(k) route that covers most ophthalmic instruments.
Why is the class the same in both countries when the rulebooks differ?
The classes agree even though the machinery differs. The United States names the lens in a regulation number and classifies it there; Canada names no lens and classifies it by the rule that fits an implant that stays in the body, which lands on the same Class III.
What is the difference between Rule 1(1) and Rule 1(3)?
Rule 1(1) puts surgically invasive devices in Class II as the baseline. Rule 1(3) lifts a surgically invasive device that is normally intended to remain in the body for at least 30 consecutive days to Class III, which is why a permanent lens and a temporary contact lens do not share a class.
Which standard covers the optic of the lens?
The ISO 11979 series covers ophthalmic implants and intraocular lenses in parts, dealing with vocabulary, optical properties and test methods, and mechanical properties, alongside the general ophthalmic instrument requirements in ISO 15004-1:2020.
Does a clinic importing lenses for resale need its own licence?
A clinic that imports or distributes devices for resale in Canada holds a medical device establishment licence, while the obligation to hold a device licence sits with the manufacturer. A Class III device reaches the market through a device licence under section 32 supported by a CAN/CSA-ISO 13485 certificate.
How is an implant traced if a recall is issued?
Traceability runs through the lot number on the lens and the record that cites it. A log with columns for the manufacturer, the product code, the lot number, the use-by date and the eye lets a recall notice be matched to the individual it concerns.
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