Beyond visual field restriction: reconsidering functional assessment in upper eyelid dermatochalasis.

PURPOSE: Commonly, dermatochalasis is assessed mainly as a functional condition in which redundant upper-eyelid skin causes demonstrable visual field restriction. This narrative review examines if visual field assessment alone captures the full clinical burden of upper-eyelid dermatochalasis and the benefits of upper-eyelid blepharoplasty. METHODS: A narrative review was undertaken using PubMed/MEDLINE, Google Scholar and citation searching. All primary studies included in the review that reported symptoms, patient-reported outcomes, anatomical severity or postoperative functional outcomes were extracted into structured evidence tables. Reviews, policy documents and referral guidelines were synthesized narratively. RESULTS: Evidence supports improvement in the superior visual field after upper-eyelid blepharoplasty. Other reported benefits include improved contrast sensitivity, headache-related quality of life, eyelid heaviness, tearing and patient-reported visual quality of life, lid-margin position, redundant-skin severity, lateral hooding or aesthetic outcome. No single validated dermatochalasis-specific functional symptom questionnaire is currently available that captures the full burden, and anatomical severity does not consistently predict patient-reported benefit. The current UK National Health Service (NHS) eligibility criteria are commonly centered on visual field loss, eyelid positioning or pupil occlusion. The Danish criteria provide a comparator by combining symptom burden with anatomical findings. CONCLUSIONS: Visual field restriction is an important indication for publicly funded upper-eyelid blepharoplasty, but it is not a complete measure of disease burden. Future referral criteria should consider the addition of a structured dermatochalasis symptom score.