Or HaChaim on Genesis 29:17/אור החיים על בראשית כ״ט:י״ז

1 ועיני לאה רכות, Leah's eyes were soft, etc. It is not customary for the Torah to reveal physical blemishes of such righteous people as our matriarchs. Therefore, the meaning of this comment must be to tell the reader that Laban could never have claimed that Rachel was Leah or vice versa because even their eyes were totally different. Leah was not only not as beautiful as her sister Rachel, but she suffered from a blemish, i.e her eyes were not attractive. Since Leah and Rachel were so different from one another in their external appearance Laban had no way of cheating on Jacob by palming off the wrong daughter on him.

2יפת תואר ויפת מראה. Both her face and her body were beautiful. Beauty may expresses itself in two ways. 1) Every individual feature is beautiful by itself; We have examples of this by Solomon in his Song of Songs where he describes the beauty of different parts of the anatomy. 2) There is such a thing as an overall beauty of both the facial features and the body. The Torah describes Rachel as blessed with both these kinds of beauty.

3The expression יפת תואר may also be understood as "objectively beautiful," whereas the expression יפת מראה may refer to the impression Rachel made on those who looked at her.