Curable silsesquioxane compositions, include three dimension networks of Formula I, Formula II, or a combination of Formula I and Formula II, where the oxygen atom at the * is bonded to another Si atom, R is a fluorinated organic group, R2 is an ethylenically unsaturated organic group, n+m is greater than 3, and the —OH groups are present in an amount of at least 15 wt-% of the network. The curable composition may also include a silanol-terminated fluorinated polysiloxane fluid. The curable composition is a coatable composition that is solvent free and wets glass. The curable composition, when cured, has a refractive index of 1.40 or lower.