Biomedical subjects

K J Hanna

Publications and source records attributed to K J Hanna.

5 recordsLinked to original sources

PubMed1993

Analysis of retro-illumination photographs for use in longitudinal studies of cataract.

Retro-illumination photography has potential for the monitoring of cortical and posterior subcapsular cataract formation. Variations in the individual illumination results have limited accurate quantification of opacities within such images. We present a new image analysis technique which minimises the effect of uneven and varying retro-illumination. The new technique has been tested for variation between photographers and over a short time period. We believe it is of value in lens assessment in combination with a semi-quantitative grading system.

Cataract↗

PubMed1990

Child problem solving competence, behavioral adjustment and adherence to lipid-lowering diet.

Dietary problem solving competence, behavioral adjustment and low density lipoprotein cholesterol (LDLC) changes were evaluated in a cross-sectional study of 55 hyperlipidemic children and adolescents more than 12 months after they had been prescribed lipid-lowering diets. Adolescents who were able to generate multiple ways to cope with dietary temptations described in hypothetical vignettes evidenced better dietary adherence than adolescents who could produce fewer coping strategies. Observation of parent-child interaction during a standard menu planning task revealed that child satisfaction with the diet was positively associated with parental attempts to solicit and reinforce the child's involvement in meal planning. Findings raise the possibility that behavioral problem solving training might improve long term dietary adherence in adolescents and encourage further research on families' responses to nutritional counseling.

Adaptation, Psychological↗

PubMed1990

A method for measuring neuroretinal rim area.

A practical method for measuring the neuroretinal rim area (NRA) of the optic nervehead is described. Sequential stereo photographs are taken on 35 mm colour transparencies using a Zeiss fundus camera with Allen stereoseparator. While examining a stereo pair with a pocket viewer the disc and cup margins are traced against the stereo image with a Rotring pen (0.1 mm tip) on a clear transparency overlying one of the photographs. This tracing is digitised and analysed by an 'edge detection' algorithm which measures the area between the traced lines, i.e. NRA. The intraobserver intraphotograph coefficient of variation (standard deviation/mean) was calculated for measurements of disc area, cup area and NRA made on 10 stereo photographs of discs with various topographies. Coefficients for NRA ranged from 3.2% to 3.9% for discs with easily discernible cup margins and from 1.6% to 7.2% for discs with less obvious cups.

Glaucoma↗

PubMed1984

The design and implementation of task oriented employee evaluations.

In an effort to improve the performance review system from both the employee's and supervisor's perspective, task oriented evaluations were designed and implemented for all pharmacy employees. The system is based on clearly defined responsibilities and performance criteria for evaluating all employees. The development of responsibilities and performance criteria is discussed, highlighting the role of employee and supervisor input in the development process.

Employee Performance Appraisal↗

PubMed1983

Graphic analysis of pharmacy workload as a management tool.

As pharmacy planners implement modern services and cost containment measures, a graphic analysis of pharmacy workload can assist the planner in better utilizing personnel time and assuring adequate time for the completion of additional functions by depicting the peak-trough relationship of workflow. Such analysis can be an effective tool to communicate to both peers and superiors.

Hospital Bed Capacity, 300 to 499↗