The Mishnah says that more blemishes would make a Kohen (priest) unfit to do the Avodah (Temple service) in the Beit HaMikdash (Holy Temple) because of his strange appearance. Somebody’s eyes are very large, like those of a calf—much larger than a normal person’s eyes—or small like those of a goose, much smaller than a normal person’s eyes. His body is larger than his other limbs. In terms of the expected ratio, his body is much larger than his arms and legs, or smaller than normal compared with his other limbs. His nose is much larger than normal in proportion to his other limbs, or smaller than expected in comparison with them. All of these blemishes would make a Kohen unfit to do the Avodah in the Beit HaMikdash.
Likewise, the blemishes of Simem and Simeah would make a person unfit to perform the Avodah in the Beit HaMikdash. What is considered a Simeah? A person’s ears are very small, just like the eyes. The Kohen has to have eyes that fit the normal ratio to a person’s head. It is the same here: the ears have to be a normal size. They can’t be too small. What is a Simeah? His ears look like a sponge. Either they are very shriveled up, like a dry sponge, or they are swollen and large, like a wet sponge that is full of water.