More Common
Refractive error (especially undercorrected myopia), advanced glaucoma or optic atrophy, miosis (especially pharmacologic), retinitis pigmentosa, congenital stationary night blindness, after panretinal photocoagulation, drugs (e.g., phenothiazines, chloroquine, quinine).
Less Common
Vitamin A deficiency, gyrate atrophy, choroideremia.