This study investigates the correlation between ocular biological characteristics and overall conditions before and after liver transplantation by collecting ocular biological characteristics. Explore whether it is possible to construct a clinical prediction model for liver transplantation by incorporating ocular biometric features, in order to optimize disease management before and after liver transplantation.

This study is a bidirectional cohort study, which retrospectively analysed data from a prospective database to construct a model, and prospectively collected patient information from preoperative to postoperative for model improvement and validation.

Inclusion Criteria:

1. Age greater than or equal to 18 years old;
2. Late stage liver disease patients waiting for liver transplantation treatment, as well as patients with varying degrees of cirrhosis;
3. Can collect complete basic demographic information, liver function blood test indicators, liver pathology and imaging examination results;
4. Can cooperate with eye OCT, OCTA and other examinations, and obtain qualified examination parameters;
5. Voluntarily follow the clinical trial protocol and sign the informed consent form.

Exclusion Criteria:

1. History of other organ transplant surgeries;
2. History of intraocular laser treatment, medication injection, and surgery;
3. History of high myopia, glaucoma, and retinal choroidal related eye diseases;
4. History of major systemic diseases other than liver disease;
5. Individuals whose overall body and eye conditions cannot cooperate with eye examinations.

The liver transplant population was recruited from individuals who went to cooperative medical unit for liver transplant registration, while normal individuals were recruited from the project responsible unit.