Recentering of a rigid contact lens should always be performed by manipulation of the lens:

The most appropriate method for recentering a rigid contact lens is through the upper or lower lids. This technique is beneficial because it minimizes the risk of damage both to the lens and to the eye. By using the eyelids to manipulate the lens, the pressure applied is generally more controlled, which allows for a gentle adjustment without directly touching the lens with fingers or another object. This approach can help prevent contamination and avoid potential abrasions on the cornea that could occur with more direct handling.

Using the eyelids to maneuver the lens also takes advantage of the natural movement of the eyes. When the eyelid is used to push against the lens, it can influence the lens' position effectively while ensuring the integrity of the lens remains intact. This method is particularly useful when the lens is slightly off-center but not to the extent that it requires removal or replacement.

In contrast, other methods, such as using a sterile cotton-tipped swab or direct finger manipulation, carry a higher risk of contamination or physical damage to both the lens and the eye, making them less preferred options for recentering a rigid contact lens. A suction cup is generally not used for this purpose as it may not provide the delicate control required for proper lens placement.