A light diffusing composition comprising: a blended product of: a matrix polymer; and from 0.05 to 2.5 wt% diffuser polymer particles, wherein the diffuser polymer particles are characterized by an average diameter from 2 to 20 micrometers, a particle size distribution such that at least 90 wt % of the polymer particles fall within ±30% of the volume average particle size, a crosslinking level greater than 4%, a refractive index, R1, from 1.40 to 1.70; and wherein the diffuser polymer particles comprise units derived from at least one alkyl (meth)acrylate monomer, from 5 wt % to 25 wt % units derived from a crosslinking monomer selected from the group consisting of aliphatic crosslinking monomers, aromatic crosslinking monomers and combinations thereof, optionally, units derived from one or more comonomers selected from the group consisting of aryl (meth)acrylate monomers and monovinyl arenes; and wherein from 0.1 to 20 wt% of one or more performance additives selected from the group consisting of refractive index changing agents, dyes, pigments, TiO 2 and flame retardants, are dispersed within the diffuser polymer particles based on the total weight of the diffuser particle, including the performance additive. a blended product of: a matrix polymer; and from 0.05 to 2.5 wt% diffuser polymer particles, wherein the diffuser polymer particles are characterized by an average diameter from 2 to 20 micrometers, a particle size distribution such that at least 90 wt % of the polymer particles fall within ±30% of the volume average particle size, a crosslinking level greater than 4%, a refractive index, R1, from 1.40 to 1.70; and wherein the diffuser polymer particles comprise units derived from at least one alkyl (meth)acrylate monomer, from 5 wt % to 25 wt % units derived from a crosslinking monomer selected from the group consisting of aliphatic crosslinking monomers, aromatic crosslinking monomers and combinations thereof, optionally, units derived from one or more comonomers selected from the group consisting of aryl (meth)acrylate monomers and monovinyl arenes; and wherein from 0.1 to 20 wt% of one or more performance additives selected from the group consisting of refractive index changing agents, dyes, pigments, TiO 2 and flame retardants, are dispersed within the diffuser polymer particles based on the total weight of the diffuser particle, including the performance additive. a matrix polymer; and from 0.05 to 2.5 wt% diffuser polymer particles, wherein the diffuser polymer particles are characterized by an average diameter from 2 to 20 micrometers, a particle size distribution such that at least 90 wt % of the polymer particles fall within ±30% of the volume average particle size, a crosslinking level greater than 4%, a refractive index, R1, from 1.40 to 1.70; and wherein the diffuser polymer particles comprise units derived from at least one alkyl (meth)acrylate monomer, from 5 wt % to 25 wt % units derived from a crosslinking monomer selected from the group consisting of aliphatic crosslinking monomers, aromatic crosslinking monomers and combinations thereof, optionally, units derived from one or more comonomers selected from the group consisting of aryl (meth)acrylate monomers and monovinyl arenes; and wherein from 0.1 to 20 wt% of one or more performance additives selected from the group consisting of refractive index changing agents, dyes, pigments, TiO 2 and flame retardants, are dispersed within the diffuser polymer particles based on the total weight of the diffuser particle, including the performance additive. from 0.05 to 2.5 wt% diffuser polymer particles, wherein the diffuser polymer particles are characterized by an average diameter from 2 to 20 micrometers, a particle size distribution such that at least 90 wt % of the polymer particles fall within ±30% of the volume average particle size, a crosslinking level greater than 4%, a refractive index, R1, from 1.40 to 1.70; and wherein the diffuser polymer particles comprise units derived from at least one alkyl (meth)acrylate monomer, from 5 wt % to 25 wt % units derived from a crosslinking monomer selected from the group consisting of aliphatic crosslinking monomers, aromatic crosslinking monomers and combinations thereof, optionally, units derived from one or more comonomers selected from the group consisting of aryl (meth)acrylate monomers and monovinyl arenes; and wherein from 0.1 to 20 wt% of one or more performance additives selected from the group consisting of refractive index changing agents, dyes, pigments, TiO 2 and flame retardants, are dispersed within the diffuser polymer particles based on the total weight of the diffuser particle, including the performance additive.