What were the results of the first experience for potential contact lenses theory performed with a glass tube?

The results of the initial experiments involving contact lenses, particularly those utilizing a glass tube, revealed significant limitations in their design, particularly in relation to the natural functionality of the eye. The correct outcome highlights that the tube structure impeded the blinking mechanism of the eye. This is crucial as blinking plays a vital role in maintaining ocular health; it helps spread tears evenly across the eye's surface and provides necessary moisture. When the ability to blink is restricted, it can lead to discomfort and potential damage to the cornea due to a lack of lubrication and protection.

In this historical context, the development of contact lenses was still in its formative stages, and understanding how artificial elements interact with the delicate anatomy of the eye was essential. The innovative concepts tested by early researchers contributed to the evolution of more effective contact lens designs that account for the need for eye movement and blinking.