What Is A High Quality Embryo Means?

Embryo picture of a "perfect" looking 8-cell embryo (day 3 embryo)

There is no embryo fragmentation and the cells are very even, regular, and similarly sized

We call this is a "high quality" day 3 embryo

Embryo grading: 8 cell, grade 4

source: http://www.advancedfertility.com/embryoquality.htm