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A multicenter, randomized, trial to test non-inferiority of microhook ab interno trabeculotomy against Trabectome for an intraocular pressure lowering effect and safety

A multicenter, randomized, trial to test non-inferiority of microhook ab interno trabeculotomy against Trabectome for an intraocular pressure lowering effect and safety - Trabectome versus Microhook ab interno Trabeculotomy Comparative Study (TramTrac Study)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000030167
Enrollment
150
Registered
2018-02-28
Start date
2018-04-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Glaucoma

Interventions

Trabectome, 75 eyes of 75 subjects ab interno trabeculotomy using microhook, 75 eyes of 75 subjects

Sponsors

Kobe University Hospital, Department of Ophthalmology
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Open anterior chamber angle with Shaffer classification grade III or IV 2) Ocular hypertension, primary open angle glaucoma, exfoliation syndrome, or exfoliation glaucoma 3) At screening, IOP is reproducibly equal to or more than 20 and less than 40 mmHg under at least 1 anti-glaucoma medication use 4) No history of intraocular surgery other than cataract surgery 5) Mean deviation better than -12dB, and two or less juxtafoveal points with 0 dB on the Humphrey visual field 30-2 or 24-2 program or equivalent 6) A patient who voluntarily provides us a written informed consent to participate in this study

Exclusion criteria

Exclusion criteria: 1) A patient with only one functional eye 2) Inapplicability to Goldmann applanation tonometry 3) Presence or a history of uveitis 4) A patient who received oral, topical, or subTenon injection of corticosteroid within 6 months 5)Presence or a history of diabetes 6) A pacemaker recipient 7) A patient who received cataract surgery on the nominated eye withn 6 months 8) A history of laser trabeculoplasty or laser iridotomy 9) Corneal endothelial density less than 1000/mm2 10) A pregnant or breast-feeding woman, or a woman who plans to be pregnant 11) An individual who participated in other studies within 4 months 12) A patient judged to be ineligible for any reason by a doctor in charge

Design outcomes

Primary

MeasureTime frame
Duration of treatment success. Definition: Surgery is defined as success if any "event" described blow does not happen at 1 month after surgery. Then, the duration of treatment success is defined as a duration from the operation day to a time when any one of the 4 events happens in the eye with surgey success. Event: 1)At two consecutive visits, IOP exceeds 21mmHg or does not reach 5mmHg. 2)IOP reduction rate compared with baseline does not reach 20%. 3)Glaucoma medical therapy is augmented. 4)Additional glaucoma surgery is required.

Secondary

MeasureTime frame
Efficacy Outcome 1) Duration of treatment success defined by more stringent criteria. Thus, event 1)is defined as that at two consecutive visits, IOP exceeds 18mmHg or does not reach 5mmHg. Other 3 events are the same as those used in the primary outcome meausure. 2)Pre- and postoperative IOP at 1, 3, 6 and 12 months. 3)The number of Pre- and postoperative anti-glaucoma medications. 4)Success or failure of surgery at 12 months. 5)Presence or absence of additional glaucoma surgery. Safety Outcomes 1) Presence, amount, and duration of hyphema 2)Presence, amount, and duration of transient postoperative IOP spike. 3)Corneal endothelial density at 12 months after surgery. 4) Other adverse events. Other Outcomes (Expolatory Outcomes) 1) Presence and degree of peripheral anterior synechie. 2) Final IOP

Countries

Japan

Contacts

Public ContactYuko Yamada

Kobe University Hospital Ophthalmology

ganka@med.kobe-u.ac.jp078-382-6048

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026