Blindness Prevention and ControlPresentation Transcript
DR.VIOLET (de Sa) PINTO
Lecturer, Department of PSM
At the end of the session the student shall have
knowledge of :
Blindness :definition, categories of visual impairment, its causes and problem statement
Changing concepts in healthcare with regards to eye care
Prevention of blindness :primary, secondary and tertiary prevention
“ Visual acuity of less than 3/60 (Snellen) or its equivalent.”
Non specialized personnel,
in absence of appropriate vision charts
“ Inability to count fingers in daylight at a distance of 3 meters.”
CATEGORIES OF VISUAL IMPAIRMENT If it is 6/18 or better = 0 or no visual impairment
Light perception 4 1/60(finger counting at 1 meter) 1/60(fingercounting at I meter) 3 3/60 Blindness 3/60 2 6/60 6/60 1 6/18 Low vision Minimum = or > than Maximum < than Visual acuity Categories of visual impairment
Estimated 180 million people are visually disabled, nearly 45 million blind, 4 out of 5 living in developing countries.
Major causes…..cataract, glaucoma, trachoma, childhood blindness, onchoceriasis.
32% are aged 45-59 yrs, large majority 58% are over 60 yrs.
SEAR has 1/3 rd of the world’s blind,50% of world’s blind children.
CHANGING CONCEPTS IN HEALTH CARE Primary eye care Promotional & protection of eye health On the spot treatment of commonest eye diseases Improve coverage and quality Establishment of National Prog. > Need for PHC approach Team Concept Deprofessionalisation VHG, Ophthalmic assistant, MPW, Voluntary agencies Epidemiological Approach Measurement of Incidence, prevalence, risk factors of disease
H.R.D. as well as infrastructure and technology developmnt. At various levels of health system.
Proposed 4 tier system
Prof. leadership, strategy.developmnt, CME,Standards,quality assurance, Research . C.O.E. 20 Training centers Tertiary care including retinal surg.,Corneal transplant. 200 Service Centers 2000 Cataract Surgery Othr common eye surg. Facilities for refraction Referral services Vision Centers 20,000 Refraction and prescription of glasses Primary eye care School eye screening Screening and referral services