Cash EPS takes into account the cash flow generated by a company on a per share basis, while EPS looks at the net income generated on a per share basis, for a given period. Like EPS, higher the cash EPS, better it is considered.
Cash EPS = Operating cash flow for the period
Weighted average number of equity shares outstanding
Cash EPS can be computed from EPS by adjusting for depreciation, amortization of goodwill and other non-cash items such as deferred tax and intangibles.