Epidemiological aspects of visual impairment above 50 years in a rural area.

A cross-sectional survey was conducted in 5 villages in central India to find out the extent, causes and epidemiological factors for visual impairment among 903 individuals aged above 50 years; 44.3% of them were visually impaired (29.4% with low vision and 14.9% blind). Age-specific visual impairment increased at a rate of 13.2% with each decade of advancing age. Landless labourers suffered more from visual impairment than other occupational groups (p < 0.05). Socioeconomic and literacy status of the population did not significantly influence the prevalence of visual impairment. Major causes of visual impairment were cataract (48.5%), refractive errors (24.5%), age-related macular degeneration (10%), glaucoma (6.8%), and others (10.2%). In view of the high prevalence of visual impairment among the elderly individuals, it is necessary to intensify our efforts in motivating them for early detection and treatment.

Immunization coverage and the knowledge and practice of mothers regarding immunization in rural area.

One hundred and thirty mothers in the age group (15-44) years and 142 children aged (12-59) months were selected by cluster sampling method from nine villages in Wardha district. Out of this 100 mothers and 122 children could be contacted for evaluation of immunization coverage and assessing maternal knowledge and practice regarding immunization. 52.5% children were fully immunized and 45.1% were partially immunized. Vaccine coverage for B.C.G. and primary doses of DPT/OPV was 95.9% and above 85% respectively. It was 57.4% for measles and 63.04% for booster dose of DPT/OPV. Drop-out rate from second to third dose of DPT/OPV was 5.3% and from third to booster dose was 36.96%. Mothers had a fair knowledge regarding need for immunization but a poor knowledge regarding the diseases prevented and doses of the vaccines. Commonest side reactions reported were fever (36%) and pain at injection site (33%). Contraindications listed by mothers were mild cold (41%), mild fever (24%) or loose stools (14%). Health workers were the major source of information and 76% knew the use and maintenance of immunization cards.

Teaching epidemiology of acute diarrheal diseases to medical undergraduates--a new approach.

A total of 165 students of first clinical year were taught the epidemiology of acute diarrheal diseases, during three successive years using a detailed lesson plan. The usual didactic lecture was minimised and supplemented by slide shows, and transparencies based on the contents of a handout on the subject distributed to all students a day prior to the class. This was followed by participatory discussions by the students on the diagnosis and management of some case examples presented. A video clip summarising the entire lesson was screened for reinforcement. Feed-back from the students showed that the teaching methodology was rated very good by 41%, and satisfactory by 59%. While 73% of the students mentioned videoclips as a factor favouring their learning, 69% cited the handouts and 49% felt that case discussions were helpful. Objective evaluation of the performance in the sessional test showed that out of 158 students who attended the test, 75% scored above 50% marks, 21% below 50% and the remaining 4% did not attempt that question.

Evaluation of vitamin A status by conjunctival impression cytology among school aged population.

Conjunctival impression cytology was used to determine the extent of preclinical and clinical vitamin A deficiency in school children aged 8-13 years. Nearly 23% of the examined children had an abnormal cytology reflecting a poor vitamin A status. The differences in cytology results were not significantly affected by either age or sex.