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So scientists used nanoscale 3D printing to create spiral-shaped robots small enough to pass through the dense jelly known as the vitreous humor that makes up most of the eyeball.

The thought of having three large needles stuck into my eyeball, and the vitreous humor then being sucked out while I was awake, did not appeal.

The eye is filled with a gellike substance called the vitreous humor.

The treatment we received for our detached retina was an operation called a vitrectomy, which entails the removal of the vitreous humor from the eyeball’s posterior chamber.

Small moving spots that appear in a person’s field of vision, floaters typically occur when tiny pieces of the eye’s gellike vitreous humor break loose within the inner back portion of the eye.