PURPOSE To report the use of intracorneal ring segment (ICRS) implantation in a case of severe corneal thinning and irregularity secondary to alkali burn. CASE REPORT A 33-year-old man who had a history of ocular alkali burn in the right eye was admitted. His best corrected visual acuity was 0.16 with manifest refraction of +5.00 (-7.00 × 180°). Orbscan II(®) revealed steepening of >53 D supe...

purpose: to determine the prevalence of keratoconus (kcn) in patients with mitral valve prolapse (mvp). methods: this descriptive study was conducted on patients with mvp at shahid rajaei hospital during 2003-2004. corneal topography was performed in 392 subjects with absolute mitral valve prolapse based on perloff’s major criteria. orbscan was carried out in suspected kcn cases. results: patie...

Shell model calculations have been done for interpreting two representative isomeric states in neutron rich Sn region using SMN and SMPN Hamiltonians. They are, (i) 2.91 min isomer in Cs and (ii) the 0.57 μs isomer in Sb nuclei. The results are compared with those obtained with KH5082 and CW5082 Hamiltonians. How the results clearly distinguish the most appropriate interaction has been discussed.

I propose a situation-theoretic formalization of the organization of information in the common ground which makes it possible to formulate principles about (i) the way an interpretation for definite descriptions is chosen, and (ii) how the information used for interpreting definite descriptions changes during the conversation.

The biological consequences of the classical theory of competition are shown to be at least partly a function of a very special way of interpreting particular constants in simple equations. Ii is shown how altered consequences may be obtained by different, but equally plausible, interpretations of those constants.