The polymerizable monomer (A), the spherical filler (B) having an average particle diameter in the range of 230 nm to 1000 nm, and the polymerization initiator (C) are contained, and individual particles constituting the spherical filler (B) are included. Among them, 90% or more exists in the range of 5% before and after the average particle diameter, and the polymerizable monomer (A) and the spherical filler (B) are represented by the following formula (1): nP <;nF (nP is polymerization (X1) represents the refractive index of the polymer obtained by polymerizing the reactive monomer (A) at 25 ° C., and nF represents the refractive index of the spherical filler (B) at 25 ° C.). Provided is a photocurable composition wherein the polymerization initiator (C) contains a photosensitizing compound (C1), a tertiary amine compound (C2), and a photoacid generator (C3).重合性単量体(A)、平均粒子径が230nm~1000nmの範囲内にある球状フィラー(B)、及び重合開始剤(C)を含有し、球状フィラー(B)を構成する個々の粒子のうち90%以上が平均粒子径の前後の5%の範囲内に存在し、重合性単量体(A)及び球状フィラー(B)が、下記式(1):nP<nF(nPは、重合性単量体(A)を重合して得られる重合体の25℃における屈折率を表し、nFは、球状フィラー(B)の25℃における屈折率を表す。)で示される条件(X1)を満たし、重合開始剤(C)が、光増感用化合物(C1)、第3級アミン化合物(C2)、及び光酸発生剤(C3)を含む光硬化性組成物を提供する。