1. An embedded (lost) contact lens.;Green;Arch Ophthalmol,1963
2. Periocular migration of hard contact lenses.;Roberts-Harry;Br J Ophthalmol,1992
3. The O signClue to a lost lens.;Bellan;Can J Ophthalmol,1990
4. Pseudochalazion of the upper lid due to hard contact lens embeddingCase reports and literature review.;Sebag;Ophthalmic Surg,1982
5. Focal giant papillary conjunctivitis from retained contact lenses.;Stenson;Ann Ophthalmol,1982