Patients who need paracentesis to lower intraocular pressure or to collect aqueous humor for laboratory tests, etc
Conditions
Interventions
control group:Shurui BD disposable sterile insulin syringe
experimental group:disposable anterior chamber puncture device produced by Hangzhou Huashi Novi
Sponsors
Peking Union Medical College Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. The subjects voluntarily participated in the trial and signed the informed consent; 2. Patients aged 18-80 years old, regardless of gender; 3. Patients who need to perform anterior chamber puncture, drainage and fluid collection, such as anterior chamber drainage to reduce intraocular pressure, collecting anterior chamber water for clinical examination, etc.; 4. Subjects with 21mm <= ocular axis <= 26.5mm; 5. The subjects who can communicate well with researchers and comply with the experimental requirements.
Exclusion criteria
Exclusion criteria: 1. Patients with ocular surface or ocular adnexal infection, including keratitis, conjunctivitis, anterior scleritis, lacrimal duct infection, lacrimal gland inflammation, Meibomianitis, blepharitis or anterior orbital cellulitis caused by bacteria, fungi, viruses, protozoa, etc; 2. Patients with low intraocular pressure (< 7 mmHg); 3. Patients with corneal ulcer and perforation; 4. Patients with unhealed eyeball rupture; 5. Patients with severe corneal opacity and corneal edema that affect the observation of puncture needle in the process of puncture; 6. Patients with hyphema, gel like inflammatory exudation of anterior chamber, etc.; 7. Objects with shallow anterior chamber (peripheral anterior chamber depth < 1 / 4 corneal thickness or central anterior chamber depth < 2.2mm); 8. Local or peripheral iris bulging caused by posterior synechia, local bulging should avoid bulging area during puncture; 9. Lens dislocation, aphakia and other causes of vitreous hernia such as anterior chamber; 10. Silicone oil or gas filled eyes after vitrectomy; 11. Patients suspected or diagnosed as malignant glaucoma; 12. Patients with history of intraocular expulsion hemorrhage; 13. Subjects of neovascular glaucoma and iris neovascularization; 14. The coagulation function was abnormal, and the researchers believed that the patient had the risk of anterior chamber hemorrhage after anterior chamber puncture.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The success rate of accurate collection of anterior chamber (40ul = aqueous volume = 60ul) was used as the effective evaluation indicator.; | — |
Secondary
| Measure | Time frame |
|---|---|
| Instrument operability score; | — |
Countries
China
Contacts
Public ContactYueguang Sun
Hangzhou Sightnovo Medical Technology Co., Ltd
Outcome results
None listed