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To investigate the efficiency and safety of using "Gas Bubble Technique" to reduce corneal endothelial damage in hard nucleus cataract patients.
The study is designed to: test the hypothesis that the "Gas Bubble Technique" is an effective method for reducing corneal endothelial damage. Describe and evaluate the effects of "Gas Bubble Technique" on a well-defined group of patients over a 1-month period following treatment.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Gas bubble group | Experimental | Inject the sterile air into the anterior chamber after the conventional cataract surgery to reduce the corneal endothelial damage |
|
| The control group | No Intervention | Conventional cataract surgery |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Gas bubble technique | Procedure | Inject the sterile air into the anterior chamber after the conventional cataract surgery to reduce corneal endothelial damage |
|
| Measure | Description | Time Frame |
|---|---|---|
| Endothelial cell loss (ECL) | The endothelial cell loss (ECL) was calculated as the percentage change in ECD from preoperative to postoperative values relative to the preoperative ECD. | 1 week and 1 month |
| Measure | Description | Time Frame |
|---|---|---|
| Central corneal thickness (CCT) increase rates | CCT increase rates = ([postoperative CCT - preoperative CCT]/preoperative CCT) × 100% | 1 week and 1 month |
| Coefficient of variation (CV) | Coefficient of variation reflected polymegathism |
| Measure | Description | Time Frame |
|---|---|---|
| Intraocular pressure | Intraocular pressure measurement | 1day, 1week, 1 month |
Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Sichuan Provincial People's Hospital | Chengdu | Sichuan | 646000 | China |
After the article is published, the data can be obtained from the corresponding author upon reasonable request
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| 1 week and 1 month |
| hexagonality (HEX) | The percentage of hexagonality represented pleomorphism, indicating the ratio of hexagonal cells to cells of other shapes | 1 week and 1 month |