What is the palpebral fissure?
Disease description:
Since childhood, my eyes have appeared narrow when smiling—even when I open them as wide as possible, others still perceive them as if they’re not open at all. This has caused me significant distress. Recently, I decided to address this issue and visited a hospital for an evaluation. The doctor diagnosed me with “palpebral fissure narrowing.” What exactly is palpebral fissure narrowing?
Doctor's answer (1)
Dr. Fu Qing
Hello, the palpebral fissure—commonly referred to as the “eye slit”—is the gap between the upper and lower eyelids. Under normal conditions, the palpebral fissure in adults measures approximately 20–30 mm; measurements falling outside this range indicate an abnormality. The palpebral fissure can be readily observed with the naked eye. Additionally, there is a slight difference in palpebral fissure size between adult males and females. If you suspect your palpebral fissure is abnormal, please consult an ophthalmologist for evaluation. We hope this information is helpful to you. Wishing you a happy and healthy life!
