Prisma Diagram.

<p>The flow chart of the systematic review process.</p

The summary Forest plots of the pooled odds ratio for PKP rejection over lamellar rejection.

<p>The summary Forest plots of the pooled odds ratio for PKP rejection over lamellar rejection.</p

The summary Forest plots of the pooled odds ratio for PKP failure over lamellar failure.

<p>The summary Forest plots of the pooled odds ratio for PKP failure over lamellar failure.</p

Meta-regression Summary for Covariates on Rates of Cornea Rejection.

<p>(Response Variable Log Odds of Rejection)</p><p>Meta-regression Summary for Covariates on Rates of Cornea Rejection.</p