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Biomedical subjects

J H Panton

Publications and source records attributed to J H Panton.

8 recordsLinked to original sources
PubMed2000

Long-term follow-up of leiske closed-loop anterior chamber intraocular lenses.

PURPOSE: To provide long-term follow-up on the rates of endothelial cell loss in eyes with retained closed-loop anterior chamber intraocular lenses (IOLs). SETTING: Private practices, Chicago, Illinois, USA. METHODS: In 1980 to 1982, 3 surgeons performed 587 intracapsular cataract extractions with implantation of Leiske closed-loop anterior chamber IOLs. During the prospective part of the study from 1991 to 1996, 59 patients with 83 eligible eyes were followed using specular microscopy and pachymetry. The mean follow-up of the prospective study was 41.9 months, or 12.9 years from the original cataract surgery. RESULTS: No specific preoperative or postoperative factor except the behavior of the fellow eye (P =.022) predicted the rate of endothelial cell loss. During the prospective study, 6 patients required IOL exchange and corneal transplantation. The rate of corneal decompensation was heavily dependent on the initial measurement of endothelial cell density. Corneas with initial endothelial cell counts greater than 1000 cells/mm(2) had a decompensation rate of 1.5%, and corneas with counts of 500 cells/mm(2) or less had a decompensation rate of 57.1% (P <.01). CONCLUSIONS: Clinical examination and serial measurements of endothelial cell density provide the most reliable methods for monitoring patients with closed-loop anterior chamber IOLs. Endothelial cell counts can predict the rate of corneal decompensation. Patients with endothelial cell counts greater than 1000 cells/mm(2) usually do not require an IOL exchange.

Aged↗
PubMed1979

Longitudinal post-validation of the MMPI Escape (EC) and Prison Adjustment (AP) scales.

Conducted a longitudinal 3-year post-validation study of the MMPI Escape (Ec) and Prison Adjustment (Ap) scale score of 301 male felon inmates convicted of major type crimes and serving sentences of 5 years or more within the North Carolina Correctional System. Examination of the escape and infraction records of these inmates in relationship to their Ec and Ap scale scores demonstrated that the two scales were still effective classification instruments in predicting escape from within prison units that provided inner and perimeter security and in predicting the committing of major rule infractions irrespective of the degree of custodial control. Caution was expressed concerning the use of the Ec and Ap scale scores without supportive date from their classification procedures.

Criminal Psychology↗
PubMed1976

Personality characteristics of death-row prison inmates.

An analysis of MMPI differences that appeared between a sample of 34 male inmates sentenced to be executed by asphyxiation and a representative prison population sample of 2,551 male inmates revealed that the profiles of both groups were indicative of a behavior disorder. The Death Row inmates presented significantly higher elevations on the PA and SC scales. Further evaluation of the subscale scores for the PA and SC scales demonstrated that the test responses of the Death Row inmates to these two scales were related more closely to feelings of resentment, hopelessness, failure, frustration, isolation and social alienation rather than to any delusional, dissociative or bizarre thought processes. Evaluation of the Death Row inmates' responses to four additional MMPI scales supported the previously made contention that the primary concern was with indices of a behavior disorder associated with the situational stress of being confined on Death Row to await execution rather than with indices of psychotic-appearing thought processes. In light of these findings it is felt that high PA and SC profiles scored by inmates who are awaiting execution should be supported by other MMPI scale, subscale and additional scale configurations, as well as other clinical inferences, before psychosis-related diagnoses are made.

Adolescent↗