To Compare the Progressive Cracking Technique and Conventional Chop Technique on Corneal Endothelial Cells in Patients With Hard Nucleus Cataract

To Compare the Progressive Cracking Technique and Conventional Chop Technique on Corneal Endothelial Cells in Patients With Hard Nucleus Cataract

Approximately 60 participants at Eye Hospital of Wenzhou Medical University during January,2017 to June 2021 will be enroll in our study. And dived them randomly into 2 groups:Progressive Cracking Technique (30 eyes) and Conventional Chop Technique (30 eyes) .

Inclusion Criteria:

• Cataract with Grade IV~V nucleus sclerosis
• Cataract surgery is planned
• The operation was successful without any complications

Exclusion Criteria:

• Patients with other diseases that affect the corneal endothelium
• Has a history of anterior segment surgery
• Failure to cooperate with follow-up