Biomedical subjects
Publications and source records attributed to T Griffith.
A 38-year-old man presented with painful growths around his toenails. Since their first occurrence at age three, several had been surgically removed. He had had similar growths around his fingernails and multiple facial lesions since age seven.
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BACKGROUND: Laser pointers have been used inappropriately to harass and "dazzle" victims. Reports of retinal damage caused by pointers have also been circulated in the popular press. METHODS: Information on pointer abuse was collected from the literature and through discussions with specialists. RESULTS: Few, if any, documented cases of permanent retinal damage caused by laser pointers could be found. For actual damage to occur, viewing, times need to exceed approximately 10 seconds. Exposures of this duration would require the person being lased to cooperate by holding fixation on the laser beam. CONCLUSIONS: Although the risk of permanent retinal damage from a laser-pointer beam is minimal, other risks include dazzle, annoyance, and concern that a weapon-aiming device rather than a pointer is generating the laser beam.
We reported recently the results of re-evaluating a series of 64 patients still experiencing pain originally diagnosed as angina but with normal coronary arteriograms. A musculoskeletal cause for the chest pain was established in 38 and an oesophageal cause in 17 of these patients. We here report these patients' self-assessment of their pain 2 years after this diagnostic reclassification. It is clear that the effects of a diagnosis of angina are not easily rescinded even when the non-cardiac cause of the chest pain is identified.
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