Describe the delivery of eye care services and the barriers to their uptake.

The Pyramid of Eye Care

• Eye care services are organised as a pyramid, in which each level handles what it can and refers upward what it cannot — and the system fails when the levels are not linked, not when a level is absent
• Community level — the ASHA, anganwadi worker and village health worker. Their role is case-finding, health education, first aid and referral, together with vitamin A distribution and, importantly, motivating and accompanying patients to the next level.
• Primary level — the vision centre, serving 50,000 people, staffed by an ophthalmic assistant or optometrist. Provides visual acuity testing, refraction and spectacles, primary eye care, treatment of minor conditions, screening for cataract, glaucoma and diabetic retinopathy, and referral. This is the level at which most eye problems can and should be solved, and it is the level most often missing

Human Resources and the Barriers to Uptake

• The human resource problem in India is not a simple shortage of ophthalmologists, and stating it as one leads to the wrong solutions:
• Distribution is the problem — ophthalmologists are heavily concentrated in urban and private practice, while the burden is rural
• Productivity varies enormously — a small number of high-volume centres perform a large share of all cataract surgery, while many ophthalmologists operate rarely
• The allied workforce is the real gap — optometrists, ophthalmic assistants, refractionists, counsellors and technicians. Task-shifting to trained mid-level personnel is what allows a service to scale, and it is well demonstrated: trained non-specialists can screen, refract, dispense spectacles, take photographs for diabetic retinopathy grading, and perform trichiasis surgery
• The Indian high-volume model — developed at institutions such as Aravind and LV Prasad and widely emulated: SICS as the standard technique; two tables per surgeon with parallel preparation; paramedical staff performing the workup; locally manufactured lenses and consumables; and cross-subsidy, in which paying patients fund free surgery for the poor, producing a financially self-sustaining service rather than one dependent on perpetual donation

• Primary eye care means integrating eye care into general primary health care rather than running it as a vertical parallel programme — which is the essence of integrated people-centred eye care
• The practical content of primary eye care — measuring vision; recognising and treating conjunctivitis and minor trauma; recognising the red flags and referring; vitamin A distribution; health education; and case-finding for cataract and refractive error
• Community participation is what makes it work — involving panchayats, self-help groups, schools, teachers and religious leaders; and using successfully treated patients as advocates.
• Monitoring must be built in — coverage, outcomes, equity by sex and by socioeconomic group, and the reasons given by those who declined
• The system fails at the joins, not the levels; a vision centre without a working referral is as useless as no vision centre