What is the primary reason for positioning the eye drape snug but not tight around the eye during surgery?

Positioning the eye drape snug but not tight around the eye is essential primarily to prevent any rise in intraocular pressure. A drape that is too tight could compress the tissues surrounding the eye, leading to elevated pressure within the eye itself during surgical procedures. Increased intraocular pressure can compromise the surgical field, interfere with the surgeon's ability to work effectively, and potentially lead to complications or damage to ocular structures.

While keeping the area clean is vital during surgery, the snug positioning of the drape focuses more on controlling pressure rather than merely maintaining sterility. Patient comfort is important, but the draping primarily serves a physiological purpose related to the eye’s environment during surgery. Access to instruments is also crucial, but this is typically less of a concern with the drape's specific position around the eye itself since there are other factors that facilitate access to surgical instruments.