The second axis of Posterior Chamber IOL Lenses market taxonomy classifies products by optical type, each subtype shaping pricing power and adoption curves. Monofocal lenses remain the baseline offering, accounting for roughly 45 % of unit shipments; low manufacturing cost and broad insurer coverage sustain volume, yet they generate modest average selling prices. Multifocal designs, divided between diffractive and refractive optics, capture about 30 % of the market and command premium pricing because they address presbyopia without additional surgical steps. Toric lenses, engineered to correct corneal astigmatism, represent close to 15 % of sales; their value lies in combining refractive correction with cataract treatment, leading to higher reimbursement rates in many regions. Accommodating IOLs, which use hinged haptics to shift position post‑operatively, hold a niche 5 % share but are priced at the upper end of the spectrum due to complex biomechanics. Finally, Extended Depth of Focus (EDOF) lenses, emerging as a compromise between monofocal clarity and multifocal range, account for the remaining 5 % and are gaining traction as evidence validates benefits. This type‑based segmentation clarifies how product differentiation drives market valuation.