Advanced Anti-Reflective Coating Enhances IOL Optical Performance and Reduces Opacification

Posterior capsular opacification (PCO) and postoperative photic phenomena—such as specular glare and halos—remain major clinical limitations following intraocular lens (IOL) implantation. This study presents a multifunctional dual-layer IOL optical coating designed to simultaneously suppress optical reflections and inhibit bio-adhesion. Using transfer-matrix modeling in ZEMAX OpticStudio, an optimized double-layer anti-reflective (AR) stack—consisting of poly(vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] as an outer nano-layer ( d_1   = 55.7  nm ,n_1   = 1.420 ) and magnesium fluoride (MgF_2 ) as an inner layer ( d_2   = 28.6 nm ,n_2  = 1.378 ) on an acrylic substrate (n_S  = 1.470)—was engineered. The coating reduced surface reflectance from  0.196 %  to   0.020  %    within the range of wavelengths(470-650nm), yielding an   ~87.8 %  suppression of residual glare. Furthermore, 2D multiphysics electrostatic modeling via Agros2D demonstrated that ambient near-UV illumination (λ = 365 - 400  nm)   induces photopolarization within the ferroelectric β-phase P(VDF-TrFE) outer film, generating a surface charge density σ_S≈-89μC/m^2   and a surface potential  V_0≈ -56  mV . Classical DLVO force evaluations confirm that Debye-screened electrostatic repulsion ( F_Coulomb≈ 8.52 pN  at  r = 1.5  nm ) overcomes non-specific attractive van der Waals forces ( F_vdW  ≈ 5.55  pN ), establishing a net repulsive barrier (∆ F = +2.97 pN ) that exceeds ambient thermal energy fluctuations ( > 15 k_B   T ). Coupled electro-hydrodynamic fluid simulations demonstrate field current accumulation ( J ≈ 4.99  A/m^2 ) at boundary stagnation zones, preventing protein adsorption and lens epithelial cell (LEC) attachment. Visible spectrum transmittance exceeds  98.2 % , offering optical clarity and retinal photoprotection.