Baby see's dad for the first time with new glasses after he returns home from deployment

How do they know what prescription to make the glasses?

There are more advanced techniques for finding prescriptions but I think the main point of these glasses are to correct a lazy eye that might cause issues later in life. Some animals actually need prescription glasses.

that is so completely adorable

"see's"

Lol.

so sweet. babies with glasses give me all the feels

Google "autorefractor".

That little hug is what I want in my life.