Reported Reactions

Devices › Intraocular pressure lowering implant

Device brand name · Intraocular pressure lowering implant

Istent Inject W Trabecular Micro Bypass System: medical device reports filed with FDA

366 reports name it, 2020–2025. Manufacturer given most often on reports: Glaukos. Product code OGO.

366
device reports naming the brand
0% of all MAUDE reports · about 63 a year
0
reports, 12 months to August 2026
29 in the 12 months before
60.1%
classified as malfunction
24.9% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

366 medical device reports received by FDA name the brand "Istent Inject W Trabecular Micro Bypass System" (intraocular pressure lowering implant); the manufacturer given most often on reports is Glaukos; received from September 2020 to August 2025. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

0 reports arrived in the 12 months to August 2026, against 29 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (60.1%) and injury (39.9%); across all intraocular pressure lowering implant reports (product code OGO) death is recorded in 0% and malfunction in 24.9%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are break (30.1%), malposition of device (18.9%) and device dislodged or dislocated (8.5%). The patient problems coded most often are foreign body in patient, intraocular pressure increased and hyphema. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

0815Sep 2021: 11Oct 2021: 12Nov 2021: 7Dec 2021: 52022Jan 2022: 10Feb 2022: 3Mar 2022: 10Apr 2022: 10May 2022: 10Jun 2022: 5Jul 2022: 11Aug 2022: 12Sep 2022: 4Oct 2022: 10Nov 2022: 7Dec 2022: 72023Jan 2023: 4Feb 2023: 6Mar 2023: 4Apr 2023: 4May 2023: 7Jun 2023: 9Jul 2023: 4Aug 2023: 15Sep 2023: 4Oct 2023: 7Nov 2023: 4Dec 2023: 72024Jan 2024: 7Feb 2024: 5Mar 2024: 2Apr 2024: 8May 2024: 6Jun 2024: 4Jul 2024: 6Aug 2024: 3Sep 2024: 5Oct 2024: 5Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 6Mar 2025: 6Apr 2025: 2May 2025: 0Jun 2025: 0Jul 2025: 3Aug 2025: 2Sep 2025: 0Oct 2025: 0Nov 2025: 0Dec 2025: 02026Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

050992020: 2520202021: 9720212022: 9920222023: 7520232024: 5120242025: 192025

Event type and report source

Event type, as classified on the report

Death0%0
Injury39.9%146
Malfunction60.1%220
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%366
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 2,684 reports carrying product code OGO. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Breakthe device broke11030.1%5.1%
Malposition of device6918.9%15.4%
Device dislodged or dislocated318.5%3.3%
Obstruction of flow267.1%6.6%
Contamination174.6%0.8%
Fracturea broken bone30.8%0.1%
Detachment of device or device componentpart of the device came off10.3%0%
Unsealed device packaging10.3%0.2%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Foreign body in patientpart of a device left in the patient7319.9%
Intraocular pressure increasedraised pressure in the eye5815.8%
Hyphema5314.5%
Visual impairmentreduced vision236.3%
Inflammationinflammation195.2%
Iritis123.3%
Macular edema123.3%
Corneal edema82.2%
Endophthalmitisinfection inside the eye71.9%
Eye injury71.9%
Adhesion(s)61.6%
Intraocular pressure decreased51.4%
Painpain, site not specified51.4%
Uveitis51.4%
Appropriate clinical signs, symptoms and conditions term/code not available30.8%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureIstent Inject W Trabecular Micro Bypass SystemProduct code OGOAll MAUDE reports
Reports3662,68426,136,888
Share of that pool—13.6%0%
Classified as death, per 1,000 reports009
Classified as injury39.9%75.1%36.2%
Classified as malfunction60.1%24.9%62.3%
Filed by the manufacturer100%97.9%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code OGO

BrandReportsLatest 12 monthsClassified as death
Cypass System82160%
Istent Trabecular Micro-Bypass52300%
Hydrus Microstent4761150%
Istent Inject Trabecular Micro Bypass System21700%
iStent Infinite Trabecular Micro-Bypass System180650%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about Istent Inject W Trabecular Micro Bypass System reports

How many FDA reports name Istent Inject W Trabecular Micro Bypass System?

366 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.

What kinds of events are reported?

malfunction (60.1%) and injury (39.9%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

break (30.1%), malposition of device (18.9%), device dislodged or dislocated (8.5%), obstruction of flow (7.1%) and contamination (4.6%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Istent Inject W Trabecular Micro Bypass System was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.