Johnny Galecki plays the character Leonard on The Big Bang Theory

Johnny Galecki plays the character Leonard on The Big Bang Theory, and he's been wearing the same glasses since the beginning of the series. Interestingly, these glasses had no lenses. In a specific scene, Galecki forgot about the absence of lenses and rubbed his eyes on his glasses, which ruined the recording of the scene, as revealed to the Huffington Post. Even so, Leonard's visual style has barely changed throughout the series.
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