Pars Plana Vitrectomy, Proliferative Diabetic Retinopathy, Risk Prediction Model
Conditions
Brief summary
Diabetic retinopathy (DR) is the main cause of blindness among working-age adults in the world. Proliferative diabetic retinopathy (PDR) is the severe stage of DR, which is characterized by neovascularization of the retina. Vitreous hemorrhage and traction retinal detachment caused by PDR often require vitrectomy. The purpose of vitrectomy is to remove vitreous hemorrhage, peel off the preretinal proliferative membrane and help restore the retina. With the deepening of people's understanding of diabetes and the development and application of various hypoglycemic drugs, the life expectancy of patients with diabetes continues to prolong. Therefore, the goal of vitrectomy in patients with DR is not only to prevent blindness, but also to maintain good vision for a long time. The purpose of this study is to analyze the risk factors related to the occurrence of long-term low vision postoperatively and establish a risk prediction model, which can help patients adjust their psychological expectations reasonably and promote communication between doctors and patients.
Interventions
None listed
Sponsors
Tianjin Medical University Eye Hospital
Study design
Observational model
CASE_CONTROL
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Voluntary and able to sign an informed consent form * Age ≥18 years * Documented diagnosis of diabetes mellitus (type I or type II diabetes) defined by the American Diabetes Association or World Health Organization criteria. * Unabsorbed vitreous hemorrhage lasted for more than 2 weeks, with or without tractional retinal detachment examen by slit lamp, B-ultrasound and fundus color photography.
Exclusion criteria
* Patients with less than 12 months of follow-up * Previous intraocular surgery (eg. corneal transplantation, glaucoma filtering, vitrectomy, except cataract surgery) * Complicated with other retinal diseases * Underwent surgery (eg. intravitreal injection, cataract surgery) of the study eye within 3 months * Lack of medical records.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Best corrected visual acuity at the last follow-up | 1 year | Standard logarithmic visual acuity scale |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| The occurrence of re-vitrectomy | 1 year | The occurrence and indication of re-vitrectomy during the follow-up period |
| The occurrence of neovascular glaucoma | 1 year | Non-contact computerized tonometer (CT-1, Topcon, Japan) and slit-lamp biomicroscopy |
| The occurrence of vitrectomy for the fellow eye | 1 year | The occurrence of vitrectomy for the fellow eye during the follow-up period |
Countries
China
Contacts
Primary ContactBojie Hu
Outcome results
None listed