The second dimension of market taxonomy addresses the types of air tonometers, each engineered to meet distinct workflow and performance criteria. Handheld devices, weighing less than 1 kg, dominate the portable segment and are favored in field screenings because of their battery‑operated design and rapid acquisition time. Tabletop models, typically larger than 5 kg, integrate with slit‑lamp platforms and provide higher measurement precision, making them the default choice in ophthalmology hospitals where throughput and data integration are critical. Portable‑desktop hybrids combine the stability of a fixed base with a detachable probe, offering flexibility for both clinic and mobile use; they capture roughly 20 % of type‑specific revenue. Integrated systems embed air tonometry within multi‑function ophthalmic analyzers, enabling simultaneous refraction, keratometry, and pressure assessment, and are increasingly adopted in high‑volume surgical centers. The distribution of these sub‑types shapes the overall market size, as higher‑priced integrated and tabletop units contribute disproportionately to revenue despite lower unit volumes, whereas handheld units drive volume growth in emerging markets.