Proliferative Diabetic Retinopathy Clinical Trial
Official title:
Comparison of the Efficacy of Standard 25 Gauge (25G)+ and Beveled 27 Gauge (27G)+ Vitrectomy Systems in Proliferative Diabetic Retinopathy
NCT number | NCT05446948 |
Other study ID # | 2021KY-27 |
Secondary ID | |
Status | Completed |
Phase | N/A |
First received | |
Last updated | |
Start date | July 11, 2022 |
Est. completion date | June 1, 2023 |
Verified date | June 2023 |
Source | Tianjin Medical University Eye Hospital |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
In recent years, vitrectomy has moved toward a minimally invasive vitrectomy surgery (MIV) system, which could effectively reduce the occurrence of operation complications, while reducing the time of post-operation recovery. With an improved design of bevel tip and a high cutting rate capacity of 10000cpm, Advanced ULTRAVIT® probes potentially provide an strong technical support for the application of MIV. The new probe facilitates great control during delicate surgical maneuvers, such as separating the hyaloid from the retinal surface, dissecting fibrovascular tissue off the surface of retina. However, there was no sufficient clinical evidence to support the benefits of Advanced ULTRAVIT ® probes in the complicated vitreoretinal surgery, such as proliferative diabetic retinopathy. More importantly, there is an urgent need of clinical evidence to support 10000cpm launch and conversion which is major objective of 2021 VR growth strategies.
Status | Completed |
Enrollment | 52 |
Est. completion date | June 1, 2023 |
Est. primary completion date | June 1, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | N/A and older |
Eligibility | Inclusion Criteria: 1. Patients with vitreous hemorrhage and tractional retinal detachment (TRD) confirmed by fundus image and B ultrasound examination, consistent with the diagnosis of severe proliferated diabetic retinopathy (PDR). 2. Patient that could follow up postoperatively at the clinic for 6 months more. 3. All the surgeries were performed by one well-experienced retinal surgeon. Exclusion Criteria: 1. Corneal lesions affecting operative field, such as corneal opacity or scar; History of vitreoretinal surgery; 2. External eye infections; 3. History of systemic thromboembolism; 4. Uncontrolled hypertension or hyperglycemia; 5. Coagulation abnormalities or currently using anticoagulant drugs other than aspirin; 6. Unable to meet postoperative position requirements; 7. Unable to be followed up regularly. |
Country | Name | City | State |
---|---|---|---|
China | Tianjin Medical University Eye Hospital | Tianjin |
Lead Sponsor | Collaborator |
---|---|
Tianjin Medical University Eye Hospital |
China,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | intra-surgery complications | The complications include hemorrhage, iatrogenic retinal breaks, iatrogenic cataracts and occurrence of hypotony during the surgery. They can be detected by a microscope during surgery. | during surgery | |
Other | Post-operative complications | The complications include recurrent vitreous hemorrhage, retinal detachment, re-operation and ocular hypertension. They can be detected through ophthalmoscope, fundus image, B ultrasound, ophthalmotonometer and so on. | within 6 months after surgery | |
Primary | the convenience in operating | The convenience will be indicated by times of ancillary instrument using, which evaluated based on the recorded surgical video. | during surgery | |
Primary | the efficiency of stripping membrane | It will be measured by the area of membrane removed per minute by probe. | during surgery | |
Secondary | best corrected visual acuity (BCVA) | BCVA using a logMAR visual acuity chart method | baseline to 6 months post-surgery |
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