High Intraocular Pressure After Cataract Surgery

Study Overview
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Brief Summary
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Effectiveness of anterior chamber drainage on the structure of the anterior chamber, the position of the intraocular lens and the shape of the corneal incision in the early stage of cataract surgery with high intraocular pressure

Detailed Description
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To explore the effect of different degrees of anterior chamber drainage on the structure of the anterior chamber, the position of the intraocular lens and the shape of the corneal incision in the early stage of cataract surgery with high intraocular pressure

Official Title
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Efficacy Evaluation of Anterior Chamber Drainage in Patients for High Intraocular Pressure After Cataract Surgery

Conditions
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Cataract, Intraocular Pressure

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients over 60 years old who underwent simple age-related cataract surgery in Eye Hospital of Wenzhou Medical University, the operation was successful, and there were no intraoperative complications such as posterior capsule rupture; Measurements were taken before and after drainage, and all data were complete ; The patient agrees and accepts the study. Exclusion Criteria: Preoperative glaucoma, ocular hypertension, iritis, uveitis and other eye diseases, as well as other eye diseases and serious systemic diseases that may affect the prognosis of surgery, such as corneal lesions, vitreous volume blood, retinal detachment, poor blood sugar control in diabetes, etc. Previous history of eye trauma, etc. Cannot cooperate with the completion of intraocular pressure measurement and CASIA2 examination.

Ages Eligible for Study
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Minimum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Group 1<br>After using a non-contact tonometer to measure, the intraocular pressure is reduced by 0-10mmHg. | |
| Group 2<br>After using a non-contact tonometer to measure, the intraocular pressure is reduced by 10-20mmHg. | |
| Group 3<br>After using a non-contact tonometer to measure, the intraocular pressure is reduced over 20mmHg. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| The position of IOL through tilt (tilt in degree) | Evaluation of the position of IOL through tilt (tilt in degree) | Two hours after cataract surgery (i.e. before anterior chamber drainage) | 
| The position of IOL through decentration (decentration in millimeter) | Evaluation of the position of IOL through decentration (decentration in millimeter) | Two hours after cataract surgery (i.e. before anterior chamber drainage) | 
| The position of IOL through tilt (tilt in degree) | Evaluation of the position of IOL through tilt (tilt in degree) | Immediately after anterior chamber drainage | 
| The position of IOL through decentration (decentration in millimeter) | Evaluation of the position of IOL through decentration (decentration in millimeter) | Immediately after anterior chamber drainage |