Conjunctival concretions are small yellow spots that are most common in tarsal conjunctiva.

1. Chronic inflammatory conditions, including atopic keratoconjunctivitis, vernal conjunctivitis, and posttrachomatous degenerations

2. Elderly

3. Calcium deposits in patients with chronic renal failure treated with maintenance hemodialysis

Chin GN, et al. Ultrastructural and histochemical studies of conjunctival concretions. Arch Ophthalmol 1980; 98: 720.

Pahor D, et al. Conjunctival and corneal changes in chronic renal failure patients treated with maintenance hemodialysis. Ophthalmologica 1995; 209:14-16.