<p>Disclosed a curable composition containing 1-90% by mass of a fluorine-containing polymer (A) containing an ethylenically unsaturated group and 10-99% by mass of chained spherical silica particles (B) which are bonded with an organic compound having a polymerizable unsaturated group, relative to the total amount of the composition excluding an organic solvent. A cured product of such a curable composition can be used as a low refractive index layer (18) for an antireflection film (10).</p>
