Visual field testing is a common eye examination used to map a person’s complete range of vision, helping to detect blind spots or areas of diminished sight. This test measures both central and peripheral vision, providing a comprehensive assessment of how well one sees across their entire visual field. To ensure the most accurate results, a simple preparatory step involving the eyelids is sometimes necessary to eliminate physical obstructions that might interfere with the test’s precision.
Why Eyelid Taping is Necessary
Eyelid taping is sometimes employed during visual field testing to address specific anatomical conditions that can obscure a person’s vision. Conditions such as ptosis, where the upper eyelid droops, or dermatochalasis, characterized by excess skin on the upper eyelid, can physically block parts of the visual field, leading to an artificially diminished visual field measurement.
The purpose of taping is to gently lift and secure the eyelid in a position that clears the visual axis. This temporary lift ensures that the entire visual field is exposed to the testing stimuli, allowing for an accurate assessment of retinal sensitivity and neural pathway function. Without this intervention, test results might incorrectly suggest a visual field defect that is actually a physical obstruction, potentially leading to misdiagnosis or unnecessary further evaluations.
How to Tape Eyelids for Visual Field Testing
Gather a few specific items for eyelid taping. Medical-grade tape, such as paper tape or micropore tape, is used due to its gentle adhesive properties and breathability, minimizing skin irritation. Small, clean scissors are helpful for cutting the tape to the appropriate length, and ensuring your hands are clean before starting the process helps prevent contamination of the delicate eyelid area.
Before applying the tape, gently clean the eyelid and surrounding skin with a mild, non-irritating cleanser, then thoroughly dry the area. Any residual oils, makeup, or moisture can prevent the tape from adhering properly, causing it to lift or detach during the test.
To apply the tape, first cut a strip approximately 1.5 to 2 inches long, depending on the individual’s eyelid and brow anatomy. Gently close the eye and identify the natural crease of the upper eyelid, if present, or the area where the eyelid needs to be lifted to clear the visual axis. Place one end of the tape strip just above the eyelashes on the central part of the upper eyelid, ensuring it adheres smoothly without creasing the skin.
With the first end secured, gently lift the eyelid upward and outward towards the eyebrow, pulling it just enough to clear the visual obstruction without causing discomfort or excessive tension. While maintaining this lifted position, secure the other end of the tape strip onto the brow bone, ensuring it is firmly attached. Once applied, ask the individual to open their eye and check if their vision feels unobstructed and comfortable, making minor adjustments if necessary.
Tips for Effective and Safe Taping
Comfort is important when taping eyelids for visual field testing. The tape should hold the eyelid in a lifted position without causing any pulling sensation, skin discomfort, or irritation to the eye itself. If the tape feels too tight or causes any discomfort, it is better to remove it gently and reapply with less tension, as discomfort can distract the individual during the test and affect results.
If the tape does not adhere properly or begins to lift during the test, it may indicate that the skin was not sufficiently clean or dry prior to application. In such cases, carefully remove the tape, re-clean and dry the area, and try a fresh piece of tape. Sometimes, using a slightly different type of medical-grade tape might also improve adhesion for individuals with particularly oily skin.
After the visual field test is complete, gentle tape removal is important to prevent skin irritation or trauma to the delicate eyelid area. Slowly and carefully peel the tape off, ideally pulling it in the direction of hair growth to minimize discomfort and avoid pulling on fine hairs. If the tape is particularly stubborn, a small amount of warm water or a gentle adhesive remover designed for skin can be applied to loosen the adhesive before peeling.
If there is any uncertainty about the proper technique for taping eyelids, or if an individual has sensitive skin, allergies, or other medical concerns, consult an eye care professional. They can provide personalized guidance, demonstrate the correct method, and recommend the most suitable type of medical tape for individual needs.