Mild/Symptomatic (Lower threshold per Asiedu et al.)
Score ≥ 8
Moderate to Severe DED (Balanced threshold per Ramalho et al.)
Section 3
Pearls/Pitfalls
Interpretation Nuance
The SPEED questionnaire is uniquely unidimensional, meaning it specifically tracks the sensory intensity of the dry eye experience. Unlike the OSDI, which measures functional limitation, SPEED is more sensitive to changes in Meibomian Gland function.
Racial & Age Statistics
Digital Devices: Students and young office workers show a significantly higher mean score (approx 8.2) due to screen-related reduced blink rate.
Gender: While DED is generally more prevalent in women, studies by Sanches et al. and Xie et al. show no significant score difference based on gender alone using the SPEED scale.
Population Means: Original English SPEED studies report means of 4.5 to 6.0, whereas language-adapted versions (Portuguese, Italian) often report higher baseline means (~7.7 - 8.2).
