Extrakapsulair

Extrakapsulair is an adjective used in Dutch to describe something located outside a capsule or involving a procedure performed outside a capsule. In medical contexts it contrasts with intracapsulair, which refers to something occurring within a capsule. The term is common in ophthalmology, but it can be used more broadly for processes or structures situated outside a capsule.

In ophthalmology, extrakapsulair often refers to cataract surgery techniques in which the lens contents are removed while the posterior capsule is left intact. The resulting capsular bag can then support an intraocular lens implant. The most notable example is extracapsular cataract extraction (ECCE). This method was developed as an alternative to intracapsular cataract extraction (ICCE) and historically required larger incisions. With advances such as phacoemulsification and in-the-bag IOL placement, ECCE has become less common in many settings, though the term remains in use in older literature and in certain regions.

Outside ophthalmology, extrakapsulair can describe anything occurring outside a capsule in a broader sense, such as implants or tissues that lie exterior to a natural capsule. The etymology traces to Latin extra- meaning outside and capsula meaning capsule, box, or sheath. The term remains a standard descriptor in Dutch medical terminology for classification and discussion of procedures or structures relative to a capsule. See also intracapsulair, cataract surgery, and phacoemulsification.