誕生日の日にかけるメガネです。
大体、主役はこういうのをかけさせられます。「本日の主役」と書かれたタスキもやられがちです。
【関連イラスト】
このメガネをかけた女性のイラストもあります。
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https://share-illu.com/pics/499
These are glasses to wear on your birthday. Usually, the main actor is made to wear something like this. Tuskies with the words "Today's leading actor" on them also tend to be worn.
Related Illustrations] There is also this illustration of a woman wearing glasses. ...
https://share-illu.com/pics/499