transpalpebraal

Transpalpebraal is an adjective used in medicine, particularly ophthalmology, to describe procedures, measurements, or imaging performed through or across the eyelid. The term combines trans- “through” with palpebra (eyelid) and denotes an approach that avoids direct contact with the cornea.

In ophthalmology, transpalpebral methods are most commonly associated with tonometry, the measurement of intraocular pressure (IOP). Transpalpebral tonometry estimates IOP by applying a sensor to the eyelid or near the lid and inferring pressure within the eye. This approach can be advantageous in patients who are unable to cooperate with traditional corneal-contact tonometry, such as children or individuals with corneal disease, contact lens wear, or surface sensitivity issues. Beyond tonometry, the term also appears in reference to transpalpebral imaging techniques, such as ultrasound, where the eyelid serves as an access path to the underlying ocular structures.

Limitations and considerations are important when using transpalpebral methods. Measurements can be influenced by eyelid thickness, edema, movement, and device calibration, leading to variability compared with standard corneal-based methods. Consequently, transpalpebral assessments are often viewed as complementary to gold-standard techniques rather than outright replacements, and clinicians may use them in conjunction with conventional tests or in specific clinical situations.

See also: tonometry, intraocular pressure, eyelids, ophthalmology, ultrasound imaging.