These milky white jellies (coated in a thin sugar casing) each have a pupil, which looks around, and which tends to fixate and stare at any movement it sees. Eating one of these jellies produces a random visual effect, determined by rolling on the following table: 

D6: 

1.  The consumer's vision becomes kaleidoscopic for 1 minute, heavily disorienting them and giving disadvantage to ability checks requiring sight and to attack roles, and also hampering their ability to move in a straight line, requiring a D8 to be rolled (with a direction assigned to each face of the die) to determine the direction of each 10 feet or more of continuous movement.
2. The consumer gains X-ray vision for the next 10 minutes, allowing them to see into and through solid matter for 1 minute. This vision has a radius of 30 feet. To them, solid objects within that radius appear transparent and don't prevent light from passing through them. The vision can penetrate 1 foot of stone, 1 inch of common metal, or up to 3 feet of wood or dirt. Thicker substances block the vision, as does a thin sheet of lead.
3. The consumer sees themselves in the 3rd person for the next 5 minutes, viewing themselves from ~1 foot behind and above.
4. The consumer gains a magical darkvision of 60 ft., allowing them to see through both mundane and magical darkness as if it were dim light. this effect lasts until the next dawn.
5. The consumer becomes blinded for 1 minute.
6. The consumer catches a maddening glimpse into the far realm, and must make a DC 15 WIS save vs. 4d6 psychic damage, taking half as much on a success. Afterwards, the consumer's eyes become charged with aberrant energy, which they can discharge in a 30 ft. beam, of which they get 1D4 uses. Any creature struck by the beam must make a DC 15 WIS saving throw vs. 4d6 psychic damage, taking half damage on a success.