The IRIDEX OcuLight SL/SLx is indicated for retinal photocoagulation, laser trabeculoplasty, transscleral cyclophotocoagulation, transscleral retinal photocoagulation, and other diode laser treatments. The following are examples of applications for the OcuLight SL/SLx laser systems. Diabetic Retinopathy (Nonproliferative Retinopathy, Macular Edema, Proliferative Retinopathy): Panretinal Photocoagulation (PRP); Focal and Grid Laser Treatments. Glaucoma (Primary Open Angle, Closed Angle, Refractory Glaucoma (recalcitrant/uncontrolled)): Laser Trabeculoplasty; Iridotomy; Transscleral Cyclophotocoagulation (TSCPC). Retinal Tears, Detachments, and Holes: Transscleral Retinal Photocoagulation (TSRPC); Focal and Grid Laser Treatments. Lattice Degeneration: PRP; Focal and Grid Laser Treatments. Age-related Macular Degeneration (AMD): Focal and Grid Laser Treatments. Intra-Ocular Tumors (Choroidal Hemangioma, Choroidal Melanoma, Retinoblastoma): Focal and Grid Laser Treatments. Retinopathy of Prematurity: PRP; TSRPC; Focal and Grid Laser Treatments. Sub-Retinal (choroidal) Neovascularization: Focal and Grid Laser Treatments. Central and Branch Retinal Vein Occlusion: PRP; Focal and Grid Laser Treatments.
Device Story
Semiconductor diode laser system; delivers pulsed infrared 810 nm laser light for therapeutic photocoagulation; visible red 630-650 nm laser used for aiming. Used by ophthalmologists in clinical settings; compatible with various delivery systems including slit lamps, indirect ophthalmoscopes, endoprobes, and transscleral probes. Device transforms electrical energy into therapeutic laser output; output intensity and duration controlled by physician to achieve desired tissue photocoagulation. Benefits include minimally invasive treatment of various retinal and glaucomatous conditions. No change to hardware or firmware from previous versions; expansion of indications only.
Clinical Evidence
No clinical data provided; bench testing only.
Technological Characteristics
Semiconductor diode laser; 810 nm infrared therapeutic wavelength; 630-650 nm red aiming beam. Delivery via slit lamps, indirect ophthalmoscopes, endoprobes, and transscleral probes. Powered surgical laser instrument. Class II device.
Indications for Use
Indicated for patients requiring retinal photocoagulation, laser trabeculoplasty, transscleral cyclophotocoagulation, or transscleral retinal photocoagulation for conditions including diabetic retinopathy, glaucoma, retinal tears/detachments/holes, lattice degeneration, AMD, intra-ocular tumors, retinopathy of prematurity, sub-retinal neovascularization, and retinal vein occlusion.
Regulatory Classification
Identification
An ophthalmic laser is an AC-powered device intended to coagulate or cut tissue of the eye, orbit, or surrounding skin by a laser beam.
Predicate Devices
IRIS Medical OcuLight SL/SLx Laser Photocoagulators (K894841 and K913430)
IRIS Medical OcuLight GL Laser Photocoagulator (K960971)
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### 510(k) Summary IRIDEX Corporation IRIS Medical® OcuLight® SL/SLx
KD20374 1/3
# Submitter's Name, Address, Telephone Number, Contact Person and Date Prepared
John D'Angelo IRIDEX Corporation 1212 Terra Bella Avenue Mountain View, CA 94043 (650) 962-8848 ext. 3905
Contact Person: (same as above)
Date Prepared: April 23, 2002
#### Name of Device and Name/Address of Sponsor
IRIS Medical OcuLight SL/SLx
IRIDEX Corporation 1212 Terra Bella Avenue Mountain View, CA 94043
#### Classification Name
Laser Instrument, Surgical, Powered CFR Section: 886.4390 Product Code: HQF
#### Predicate Devices
The OcuLight SL/SLx laser systems for the expanded indication of iridotomy are substantially equivalent to other currently legally marketed ophthalmology laser devices including IRIDEX Corporation's IRIS Medical OcuLight SL/SLx Laser Photocoagulators (K894841 and K913430), the IRIS Medical OcuLight GL Laser Photocoagulator (K960971), the Keeler Instruments, Microlase (K890086), and the Nidek, DC-3300 Laser Diode Photocoagulation (K013760).
#### Device Description
The OcuLight SL/SLx is a semiconductor diode laser system that delivers pulsed infrared 810 nm laser light intended to be used for the indication of retinal photocoagulation, laser trabeculoplasty, transscleral cyclophotocoagulation, transscleral retinal photocoagulation, and other laser diode treatments. Visible red (630-650 nm) semiconductor diode laser is used for aiming.
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### Intended Use
The OcuLight SL/SLx is indicated for retinal photocoagulation, laser trabeculoplasty, The Ocalign DE SEA to mulation, transscleral retinal photocoagulation, and other diode laser treatments. The following are examples of applications for the OcuLight SL/SLx laser systems.
| Condition | Treatment |
|----------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|
| Diabetic Retinopathy Nonproliferative Retinopathy Macular Edema Proliferative Retinopathy | Panretinal Photocoagulation (PRP);<br>Focal and Grid Laser Treatments |
| Glaucoma Primary Open Angle Closed Angle Refractory Glaucoma<br>(recalcitrant/uncontrolled) | Laser Trabeculoplasty; Iridotomy;<br>Transscleral Cyclophotocoagulation (TSCPC) |
| Retinal Tears, Detachments, and Holes | Transscleral Retinal Photocoagulation (TSRPC); Focal and Grid Laser<br>Treatments |
| Lattice Degeneration | PRP; Focal and Grid Laser Treatments |
| Age-related Macular Degeneration (AMD) | Focal and Grid Laser Treatments |
| Intra-Ocular Tumors Choroidal Hemangioma Choroidal Melanoma Retinoblastoma | Focal and Grid Laser Treatments |
| Retinopathy of Prematurity | PRP; TSRPC; Focal and Grid Laser<br>Treatments |
| Sub-Retinal (choroidal) Neovascularization | Focal and Grid Laser Treatments |
| Central and Branch Retinal Vein Occlusion | PRP; Focal and Grid Laser Treatments |
### Technological Characteristics and Substantial Equivalence
The OcuLight SL/SLx Laser System is indicated for retinal photocoagulation, laser trabeculoplasty, TSCPC, and TSRPC. The expansion of the indications for use for the proposed OcuLight does not result in a change to the hardware or firmware for the currently marketed OcuLight.
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The OcuLight GL Laser System is indicated for retinal photocoagulation and laser trabeculoplasty. The OcuLight GL is a semiconductor-based ophthalmic laser photocoagulator that delivers true continuous wave green laser (532 nm) light.
The OcuLight GL delivers similar power, use similar delivery devices, and have similar indications as the OcuLight SL/SLx.
The Keeler Instruments Microlase Diode Laser System is indicated for retinal photocoagulation. The Microlase diode laser system delivers a wavelength of 780 to 840 nm infrared laser light.
The Microlase delivers the same infrared wavelength, pulses of equivalent duration, treatment spots of equivalent size, and energy densities equivalent to the OcuLight SL/SLx.
The Nidek DC-3300 Laser Diode Photocoagulation is indicated for all retinal photocoagulation procedures. The DC-3300 and OcuLight SL/SLx use a variety of delivery systems, including slit lamps, indirect ophthalmoscopes, endoprobes, and transscleral probes.
The DC-3300 delivers a similar infrared wavelength, pulses of equivalent duration, treatment spots of equivalent size, and energy densities equivalent to the OcuLight SL/SLx.
#### Non-Clinical performance Data
None
#### Clinical performance Data
None
#### Conclusion
The OcuLight SL/SLx is substantially equivalent to predicate devices currently legally marketed for the indication of retinal photocoagulation, laser trabeculoplasty, transscleral cyclophotocoagulation, transscleral retinal photocoagulation, and other diode laser treatments.
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#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized image of three human profiles facing right, stacked on top of each other.
#### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
# MAY 0 3 2002
Mr. John D'Angelo Vice President, Regulatory Affairs and Ouality Assurance IRIDEX Corporation 1212 Terra Bella Avenue Mountain View, California 94043
Re: K020374
Trade/Device Name: IRIS Medical® OcuLight® SL/SLx Regulation Number: 886.4390 and 878.4810 Regulation Name: Ophthalmic laser and laser surgical instrument Regulatory Class: II Product Code: HQF and GEX Dated: January 30, 2002 Received: February 4, 2002
Dear Mr. D'Angelo:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate 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) that do not require approval of a premarket approval application (PMA). 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 (PMA), 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 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
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Page 2 -- Mr. John D'Angelo
This letter will allow you to begin marketing your device as described in your Section 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 21 CFR Part 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4659. 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" (21CFR Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/dsma/dsmamain.html
Sincerely yours,
Miriam C. Provost
for Celia M. Witten, Ph.D., M.D. Director Division of General, Restorative and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### INDICATIONS FOR USE STATEMENT
| 510(k) Number (if known): Pending | K020374 |
|-----------------------------------|---------|
|-----------------------------------|---------|
Device Name: IRIS Medical® OcuLight® SL/SLx
Indications For Use:
The IRIDEX OcuLight SL/SLx is indicated for retinal photocoagulation, laser trabeculoplasty, transscleral cyclophotocoagulation, transscleral retinal photocoagulation, and other diode laser treatments. The following are examples of applications for the OcuLight SL/SLx laser systems.
| Condition | Treatment |
|------------------------------------------------------|-----------------------------------------------|
| Diabetic Retinopathy | Panretinal Photocoagulation (PRP); Focal |
| • Nonproliferative Retinopathy | and Grid Laser Treatments |
| • Macular Edema | |
| • Proliferative Retinopathy | |
| Glaucoma | Laser Trabeculoplasty; Iridotomy; |
| • Primary Open Angle | Transscleral Cyclophotocoagulation<br>(TSCPC) |
| • Closed Angle | |
| • Refractory Glaucoma<br>(recalcitrant/uncontrolled) | |
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NEEDED
Concurrence of CDRH, Office of Device Evaluation (ODE)
Muriam C. Provost
(Division Sign-Off) (Division Sigi-On), Restorative Division of Coccal Devices
510(k) Number K020374
Prescription Use _
OR (Per 21 CFR 801.109) Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________
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.
.
# INDICATIONS FOR USE STATEMENT
.
| 510(k) Number (if known): | <s>Pending</s> K020374 |
|---------------------------|------------------------|
|---------------------------|------------------------|
Device Name: IRIS Medical® OcuLight® SL/SLx___________________________________________________________________________________________________________________________________
Indications For Use:
| Condition | Treatment |
|--------------------------------------------|-----------------------------------------------------------------------------------|
| Retinal Tears, Detachments, and Holes | Transscleral Retinal Photocoagulation<br>(TSRPC); Focal and Grid Laser Treatments |
| Lattice Degeneration | PRP; Focal and Grid Laser Treatments |
| Age-related Macular Degeneration (AMD) | Focal and Grid Laser Treatments |
| Intra-Ocular Tumors | Focal and Grid Laser Treatments |
| • Choroidal Hemangioma | |
| • Choroidal Melanoma | |
| • Retinoblastoma | |
| Retinopathy of Prematurity | PRP; TSRPC; Focal and Grid Laser<br>Treatments |
| Sub-Retinal (choroidal) Neovascularization | Focal and Grid Laser Treatments |
| Central and Branch Retinal Vein Occlusion | PRP; Focal and Grid Laser Treatments |
(PLEASE DO NOT WRITE BELOW THIS LINE – CONTINUE ON ANOTHER PAGE IF NEEDED
Concurrence of CDRH, Office of Device Evaluation (ODE)
Miriam C. Provost
(Division Sign-Off) (Division Sigil-On)
Division of General, Restorative
Division of General, Devices Division of General, and Neurological Devices
510(k) Number K020374
X Prescription Use __
OR (Per 21 CFR 801.109) Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
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.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
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.
How do you verify an AI chat answer on the device detail page?
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.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
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.