https://www.selleckchem.com/products/4sc-202.html CONCLUSIONS The propagation of light within SS primarily does not occur by TIR off the posterior cornea but rather the direct transcameral propagation of light. SS also represents an inefficient usage of light, with approximately half of the light creating a potential glare source for clinicians. We have formulated a recommended set of parameters for the slit-lamp setup to maximize clinical visualization. We also describe the transcameral pathways involved in SS that create a corneal "backlighting" effect. Almost a century after Graves original description, the optics of this phenomenon are described here.PURPOSE To describe a case of a patient with bilateral proliferation of chondrocytes of the lower palpebral conjunctiva. METHODS Observational case report and review of relevant literature. RESULTS Conjunctival biopsy from an 83-year-old man with bilateral acquired lower conjunctival nodules revealed a benign proliferation of chondrocytes. A general medical evaluation revealed serum monoclonal gammopathy with light-chain proteinuria. CONCLUSIONS Bilateral-acquired benign chondrocyte tumefactions of the palpebral conjunctiva have not been previously reported. This initiated a search for a biologically plausible explanation. The findings in this report support that these proliferations represent chondroid metaplasia related to light-chain deposition. The diagnosis requires exclusion of other forms of chondrocyte proliferation including well-differentiated chondrosarcoma.PURPOSE To highlight the novel application of anterior segment optical coherence tomography (AS-OCT) to detect corneal silver deposition in a case of ocular argyrosis. METHODS This is a case report and review of the literature. RESULTS A 67-year-old man with a 30-year history of chronic occupational exposure to silver-halides secondary to photographic film manufacturing presented with significant ocular argyrosis. His ophthalmic examination was notable