The Boston® Liquid Enzymatic Cleaner is indicated for weekly enzymatic cleaning of fluoro silicone acrylate and silicone acrylate rigid gas permeable contact lenses during simultaneous conditioning (wetting, soaking, and disinfecting) with Original Formula Boston® Conditioning Solution, Boston ADVANCE® Comfort Formula Conditioning Solution, or Boston SIMPLICITY® Multi-Action Solution.
Device Story
Boston® Liquid Enzymatic Cleaner is a sterile, aqueous, buffered solution containing proteolytic enzyme (subtilisin) and glycerol; preservative-free. Used by patients at home for weekly cleaning of rigid gas permeable (RGP) contact lenses. The cleaner is added to conditioning solutions (wetting, soaking, and disinfecting) to remove protein deposits from lens surfaces. By facilitating protein removal during the conditioning process, the device helps maintain lens clarity and comfort, potentially reducing ocular irritation associated with protein buildup. The healthcare provider recommends the regimen; the patient performs the cleaning process manually as part of their routine lens care.
Clinical Evidence
Clinical study involved 103 patients (206 eyes) over three months, comparing Boston® Liquid Enzymatic Cleaner (n=69) to Alcon OPTI-ZYME (n=32). Primary endpoints included safety and efficacy in cleaning silicone acrylate and fluoro-silicone acrylate lenses. Results showed 95.1% of eyes achieved visual acuity of 20/30 or better; no subjects discontinued due to adverse reactions. Study concluded the device is safe and effective, demonstrating substantial equivalence to the predicate.
Technological Characteristics
Sterile, aqueous, buffered solution containing proteolytic enzyme (subtilisin) and glycerol. Preservative-free. Formulated for compatibility with silicone acrylate and fluoro silicone acrylate RGP lenses. Testing performed per 1996/1997 FDA Guidance Documents for Contact Lens Care Products.
Indications for Use
Indicated for weekly enzymatic cleaning of fluoro silicone acrylate and silicone acrylate rigid gas permeable contact lenses for patients using specified Boston conditioning solutions.
Regulatory Classification
Identification
A soft (hydrophilic) contact lens care product is a device intended for use in the cleaning, rinsing, disinfecting, lubricating/rewetting, or storing of a soft (hydrophilic) contact lens. This includes all solutions and tablets used together with soft (hydrophilic) contact lenses and heat disinfecting units intended to disinfect a soft (hydrophilic) contact lens by means of heat.
Special Controls
*Classification.* Class II (Special Controls) Guidance Document: “Guidance for Industry Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products.”
Alcon OPTI-FREE® SupraCLENS Daily Protein Remover (P820001/S21)
Submission Summary (Full Text)
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## 510(K) SUMMARY
# K973217
## NOV 2 4 1997
| 1. | SUBMITTER: | Company Name: | Polymer Technology,<br>a division of Wilmington<br>Partners, L.P. |
|----|-----------------|-----------------|-------------------------------------------------------------------|
| | | Address: | 1400 North Goodman Street<br>Rochester, NY 14692 |
| 2. | CONTACT PERSON: | | Douglas J. Fortunato<br>Manager, Regulatory Affairs |
| | | Address: | 1400 North Goodman Street<br>Rochester, NY 14692 |
| | | Telephone No.: | (716) 338-5477 |
| | | Fax No. | (716) 338-0702 |
| | | E-mail Address: | dfortunato@bausch.com |
#### 3. DEVICE IDENTIFICATION:
| Trade Name: | Boston® Liquid Enzymatic Cleaner |
|----------------------|-----------------------------------------------|
| Common Name: | contact lens cleaner |
| Classification Name: | Rigid Gas Permeable contact lens care product |
#### CLASSIFICATION NAME AND REFERENCE: 4. Class II Ophthalmic Device 21 CFR 886.5925
#### PREMARKET NOTIFICATION NUMBER: ર્જ
#### INDICATION FOR USE: ર.
The Boston® Liquid Enzymatic Cleaner is indicated for weekly cazymatic cleaning of fluoro silicone acrylate and silicone acrylate rigid gas permeable contact lenses during simultaneous conditioning (wetting, soaking, and disinfecting) with Original Formula Boston® Conditioning Solution, Boston ADVANCE® Comfort Formula Conditioning Solution, or Boston SIMPLICITY® Multi-Action Solution.
#### DEVICE DESCRIPTION: 7.
The Boston® Liquid Enzymatic Cleaner is a sterile, aqueous, buffered solution containing proteolytic enzyme (subtilisin) as the cleaning agent, and glycerol. Preservative-free.
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#### 8. STATEMENT OF EQUIVALENCE:
The Boston® Liguid Enzymatic Cleaner has the same indications for use as Alcon OPTI-ZYME® Enzymatic Cleaner, which was approved under PMA P820001. Substantial equivalence is also claimed with two other currently marketed enzymatic cleaner for rigid gas permeable contact leases. The first is Bausch & Lomb ReNu@ 1 Step14 Enzymatic Cleaner, which, like Boston® Liquid Enzymatic Cleaner, contains a proteolytic enzyme (subtilism) as the active cleaning agent. Bausch & Lomb ReNu® 1 StepTM Enzymatic Cleaner was approved under PMA P850093/S3. The second is Alcon OPTI-FREE® SupraCLENS Daily Protein Remover, which a also a liquid enzymatic cleaner that is indicated for use to clean fluoro silicone acrylate and sillcone acrylate rigid gas permeable contact lenses. OPTI-FREE® SupraCLENS was cleared under PMA No. P820001/S21.
#### ರಿ. PRE-CLINICAL:
A series of in-vitro and in-vivo preclinical chemical, toxicological, and microbiological studies were performed to assess the safety and effectivegess of Boston® Liquid Enzymatic Cleaner. Testing was carried out in accordance with Premarket Northcation (510 (k)) Guidance Document for Contact Lens Care Products, May 1, 1997, and the Draft Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products, April 1, 1996. A description of those tests can be found below.
### Toxicology:
An in vitro biological reactivity (Agar Diffusion, USP 23, 1995, Chapter 87, 1698) test was conducted using Boston IV (silicone scrylate) and Boston ES (fluoro silicone acrylate) Rigid Gas Permeable Contact Lenses treated with lens care regimens employing BOSTON Conditioning Solution, BOSTON ADVANCE Comfort Formula Conditioning Solution, or BOSTON SIMPLICITY Multi-Action Solution in conjunction with Boston® Liquid Enzymatic Cleaner,
A five day ocular irritation study was conducted in the rabbit to investigate the ocular irritation and toxicity potential of the Boston® Liquid Enzymatic Cleaner used in a lens care regimen employing BOSTON Cleaner and BOSTON Conditioning Solution with BOSTON ES Rigid Gas Permeable Contact Lenses.
A primary ocular irritation test was conducted using extracts from the red screw cap, red bulb cap, blue screw cap, and blue bulb cap packaging components for Boston® Liquid Enzymatic Cleaner to determine the potential for any extractable ocular irritants.
The results of these tests demonstrate that the product and packaging components are not toxic.
{2}------------------------------------------------
### Microbiology:
### Sterility:
Studies carried in accordance with USP 23, 1995, Chapter 95, 1689, were performed to demonstrate the sterility of Boston® Liquid Enzymatic Cleaner.
. : : :
### Biostatic Efficacy:
The biostatic activity of Boston® Liquid Enzymatic Cleaner was determined using a combination of two test methods. One was the Bacteriostasis Test Method as described in the Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products. May 1 1997. The other was the Preservative Efficacy Test Method for Multi-Dose Preserved Contact Lons Care Products, is also described in the Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products. May 1 1997.
At the zero time point, separate samples of three lots of Boston® Liguid Enzyme Cleaner were each inoculated with one of the five USP-designated microorganisms to a final concentration of approximately 1x106 cfu/mL. Test microbes included bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, and Eschericia coli), yeast (Candida albicans), and mold (Aspergillus niger). Test samples were assaved at 7 and 14 days after inoculation to determine the concentrations of surviving microorganisms. Immediately after the 14-day assay, each test solution was rechallenged with a fresh inoculum of the same species of microorganisms. Test samples were continually assayed every 7 days through 42 days after initial challenge, and were assaved every 2-3 weeks thereafter, up to at least 98 days to establish the 90 day discard date.
### Disinfection Efficacy:
The Baston® Liguid Enzymatic Cleaner/conditioning solution combination was tested in accordance with the disinfection efficacy requirements in the Premarket Notification (510 (k)) Guidance Document for Contact Lens Care, May 1, 1997 Products. BOSTON Conditioning Solution, BOSTON ADVANCE Comfort Formula Conditioning Solution and BOSTON SIMPLICITY Multi-Action Solution were tested for disinfection efficacy in combination with Boston® Liquid Enzymatic Cleaner.
The results from these tests support that the product has acceptable antimicrobial activity.
#### Shelf Life:
Expiration dating was established based on the Shelf-life Protocol testing in accord with the Premarket Notification (510 (k)) Guidance Document for Contact Lens Care Products, May 1, 1997, and the Draft Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products, April 1, 1996,
### Lens/Solution Compatibility:
The competibility of Boston® Liquid Enzymatic Cleaner with silicone scrylate and fluoro silicone acrylate rigid gas permeable contact lenses was determined using a test procedure that is based on the Solution Compatibility Test Protocol found in the Premarket
{3}------------------------------------------------
Nortfloation (510 (k)) Guidance Document for Contact Lens Care Products, May 1, 1997, and the Draft Premarket Notification (510(k)) Guidance Document for Contact Lens Care Products, April 1, 1996.
The results of these tests demonstrate the compatibility of the proposed regimens with silicone acrylate and fluoro silicone acrylate rigid gas permeable contact lenses.
### In-Vitro Cleaning:
The cleaning efficacy of Boston® Liquid Enzymatic Cleaner dissolved in BOSTON Conditioning Solution, BOSTON ADVANCE Comfort Formula Conditioning Solution and BOSTON SIMPLICITY Multi-Action Solution compared to Alcon OPTI-ZYME Enzymatic Cleaner dissolved in Bausch & Lomb Sensitive Eyes Saline Solution was determined by Image Analysis
Human worn RGP leases were treated with both Boston® Liguid Enzymatic Cleaner and with Alcon OPTI-ZYME. The lenses were evaluated for protein level determination. This type of cleaning evaluation is suggested in the Premarket Notification (510(k) Guidance Document for Contact Lens Care Products, May 1, 1997.
The results of these tests demonstrate that the cleaning efficacy of the product is substantially equivalent to the predicate device.
#### 10. CLINICAL:
The clinical study used to support this premarket notification was carried out to determine that the is the Boston® Liquid Enrymatic Cleaner is substantially equivalent in safety and efficacy when compared to the currently marketed Alcon OPTI-ZYME Enzymatic Cleaner, when used with currently marketed silicone acrylate and fluoro-silicone acrylate lens materials.
The study involved six investigational sites and 103 patients (206 eyes) for a period of three months. 69 Datients (64 eves) used Boston® Liquid Enomatic Cleaner. and 32 patients (64 eyes) used marketed Alcon OPTI-ZYME Enzymatic Cleaner.
Of the 103 subjects entered into the study, 95 subjects completed the study, Twelve subjects were discontinued from the study. No subjects were discontinued from the study for adverse reactions. Subjects recruited into the study ranged in age from 18 - 69, with a mean age of 43.2.
Completed and discontinued patients reported consistently good visual acuities with 95.1% of acuities reported for completed eyes at 20/30 or better. During the study the average lens wearing time for completed eyes was between 13.7 and 14.2 hours per day.
{4}------------------------------------------------
#### 11. CONCLUSION:
The results from all non-clinical studies demonstrate that the Boston® Liquid Enzymatic Cleaner is safe, effective, and is substantially equivalent to the prodicate device.
,:::
{5}------------------------------------------------
Image /page/5/Picture/1 description: The image is a black and white seal for the U.S. Department of Health & Human Services. The seal features a stylized caduceus, a symbol often associated with medicine and healthcare, in the center. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the caduceus.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 2 4 1997
Mr. Douglas J. Fortunato Director, Regulatory Affairs Polymer Technology 1400 North Goodman Street Rochester, NY 14692
K973217 Re: Trade Name: Boston® Liquid Enzymatic Cleaner Regulatory Class: II Product Code: 86 LPN Dated: August 26, 1997 Received: August 27, 1997
Dear Mr. Fortunato:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act). You may, therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
{6}------------------------------------------------
### Page 2 - Mr. Douglas J. Fortunato
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4613. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours,
A Ralph Rosenthal
A. Ralph Rosenthal, M.D. Director Division of Ophthalmic Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{7}------------------------------------------------
Polymer Technology. a division of Wilmington Partners, L.P. 1400 North Goodman Street Rochester, NY 14692-0450
### Indications for Use Statement
510(k) Number (if known): ___K973217
Device Name: Boston® Lianid Enzymatic Cleaner
Indications for Use:
The Boston® Liquid Encymatic Cleaner is indicated for weekly enzymatic cleaning of fluoro silicone acrylate and silicone acrylate rigid gas permeable contact lenses during simultaneous conditioning (wetting, soaking, and disinfecting) with Original Formula Boston® Conditioning Solution, Boston ADVANCE® Comfort Formula Conditioning Solution, or Baston SIMPLICITY® Multi-Action Solution.
## (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use __
OR
Over-The-Counter-Use
Myra Smith
Sign-Off) f Ophthalmic Devices 510(k) Number_K973217
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Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
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Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
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7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.