Primary pterygium Eye Diseases Pterygium
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.The size of the pterygium is at least 2 mm onto the cornea or causing extreme irritation. 2. Most of the pterygium is translucent, and the episcleral vessels underneath the body of the pterygium can be identified 3. Patients 30-80 years old
Exclusion criteria
Exclusion criteria: 1. Recurrent pterygium 2. Dry eye 3. Infection and inflammation of ocular area 4. Glaucoma 5. Previous ocular surgery in the study eye 6. Patients with a <6-month follow-up period
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Recurrence defined as the regrowth of the fibrovascular proliferation tissue invading the cornea again, checked at first week and then 1, 3, 6 and 12 months postoperatively | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Visual acuity is measured using a snellen chart at preoperative and postoperative day, first week and then 1, 3, 6, and 12 months postoperatively 2. Intraocular pressure (IOP) measured using a non-contact tonometer at preoperative and postoperative day, first week and then 1, 3, 6, and 12 months postoperatively 3. The size of the pterygium is measured using slit lamp at preoperative day 4. Complications measured using slit lamp at first week and then 1, 3, 6, and 12 months postoperatively 5. Pain is recorded at postoperative day, first week and then 1, 3, 6, and 12 months postoperatively 6. Surgical times, recorded during the surgery | — |
Countries
China