Within the types dimension, the market further fragments into distinct sub‑categories that shape competitive dynamics. Diagnostic types are classified as functional tests (e.g., Schirmer, tear‑film break‑up time), imaging modalities (optical coherence tomography, interferometry), and biochemical assays (tear osmolarity meters, cytokine panels). Each subtype contributes differently: functional tests dominate volume sales, imaging commands premium pricing, and assays drive high‑margin laboratory services. Treatment types comprise lubricating formulations (artificial tears, gels), anti‑inflammatory agents (corticosteroids, cyclosporine, lifitegrast), secretagogues (rebamipide, diquafosol), punctal occlusion devices, and emerging biologics (autologous serum, gene‑therapy vectors). The relative weight of these types reflects clinical guidelines and patient adherence patterns, with lubricants representing the largest share of unit sales, while anti‑inflammatory drugs capture the highest revenue per prescription. Understanding these subtype contributions is essential for forecasting growth trajectories and identifying niche opportunities within the broader Dry Eye Disease Diagnostics and Treatment market.