Reported Reactions

Devices › Intraocular pressure lowering implant

Device brand name · Intraocular pressure lowering implant

Hydrus Microstent: medical device reports filed with FDA

476 reports name it, 2019–2026. Manufacturer given most often on reports: Ivantis. Product code OGO.

476
device reports naming the brand
0% of all MAUDE reports · about 64 a year
115
reports, 12 months to August 2026
65 in the 12 months before
19.3%
classified as malfunction
24.9% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 476 reports that name the brand "Hydrus Microstent" (intraocular pressure lowering implant), received between January 2019 and August 2026; the manufacturer given most often on reports is Ivantis. Spellings of one product vary from report to report.

115 reports arrived in the 12 months to August 2026, up 77% from 65 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 injury (80.7%) and malfunction (19.3%); 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 malposition of device (29.2%), insufficient device problem information (12.8%) and difficult to advance (9%). The patient problems coded most often are intraocular pressure increased, eye injury 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

01019Sep 2021: 6Oct 2021: 5Nov 2021: 6Dec 2021: 82022Jan 2022: 11Feb 2022: 7Mar 2022: 4Apr 2022: 7May 2022: 6Jun 2022: 8Jul 2022: 4Aug 2022: 7Sep 2022: 8Oct 2022: 5Nov 2022: 12Dec 2022: 82023Jan 2023: 5Feb 2023: 6Mar 2023: 4Apr 2023: 5May 2023: 5Jun 2023: 4Jul 2023: 3Aug 2023: 4Sep 2023: 4Oct 2023: 1Nov 2023: 9Dec 2023: 22024Jan 2024: 6Feb 2024: 5Mar 2024: 6Apr 2024: 7May 2024: 2Jun 2024: 7Jul 2024: 4Aug 2024: 4Sep 2024: 4Oct 2024: 10Nov 2024: 5Dec 2024: 42025Jan 2025: 4Feb 2025: 2Mar 2025: 10Apr 2025: 8May 2025: 2Jun 2025: 4Jul 2025: 9Aug 2025: 3Sep 2025: 5Oct 2025: 11Nov 2025: 8Dec 2025: 12026Jan 2026: 3Feb 2026: 19Mar 2026: 14Apr 2026: 7May 2026: 16Jun 2026: 5Jul 2026: 14Aug 2026: 12

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

045902019: 2320192020: 3520202021: 5820212022: 8720222023: 5220232024: 6420242025: 6720252026: 902026

Event type and report source

Event type, as classified on the report

Death0%0
Injury80.7%384
Malfunction19.3%92
Other0%0
Not given0%0

Who filed the report

Manufacturer report98.3%468
Voluntary report1.3%6
User facility report0%0
Distributor report0%0
Not given0.4%2

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
Malposition of device13929.2%15.4%
Insufficient device problem information6112.8%7.5%
Difficult to advance439%1.6%
Separation failure326.7%1.1%
Migrationthe device moved from where it was placed275.7%1.4%
Obstruction of flow214.4%6.6%
Device stenosis71.5%0.3%
Retraction problem71.5%0.2%
Improper or incorrect procedure or method61.3%1.1%
Defective devicethe device was defective51.1%0.5%
Failure to eject40.8%0.1%
Material twisted/bent40.8%0.2%
Separation problem40.8%0%
Difficult to insertthe device was hard to insert30.6%0.3%
Lack of effect30.6%0.1%
Patient-device incompatibilitythe device did not suit the patient30.6%1.8%
Positioning problem30.6%1%
Biocompatibility20.4%0.1%
Breakthe device broke20.4%5.1%
Device appears to trigger rejection20.4%0.1%

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
Intraocular pressure increasedraised pressure in the eye13327.9%
Eye injury7515.8%
Hyphema6413.4%
Inflammationinflammation469.7%
Adhesion(s)428.8%
Blurred vision418.6%
Iritis418.6%
Eye paineye pain377.8%
Macular edema336.9%
Corneal edema265.5%
Uveitis183.8%
Intraocular pressure decreased173.6%
Visual disturbances142.9%
Visual impairmentreduced vision122.5%
Foreign body in patientpart of a device left in the patient102.1%

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

In context

MeasureHydrus MicrostentProduct code OGOAll MAUDE reports
Reports4762,68426,136,888
Share of that pool—17.7%0%
Classified as death, per 1,000 reports009
Classified as injury80.7%75.1%36.2%
Classified as malfunction19.3%24.9%62.3%
Filed by the manufacturer98.3%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%
Istent Inject W Trabecular Micro Bypass System36600%
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 Hydrus Microstent reports

How many FDA reports name Hydrus Microstent?

476 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 115 in the latest 12 months.

What kinds of events are reported?

injury (80.7%) and malfunction (19.3%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

malposition of device (29.2%), insufficient device problem information (12.8%), difficult to advance (9%), separation failure (6.7%) and migration (5.7%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (98.3%) and voluntary reports (1.3%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Hydrus Microstent 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.