Programme

Sight restoration

Most blindness in the world is caused by things a surgeon can fix in under half an hour. We pay for the operations, train the people who do them, and publish how well they turned out.

Since
1983, with cataract camps in Lalitpur, Nepal
Where
Bangladesh, Ethiopia, Japan, Kenya, Nepal, the Philippines, Tanzania, Uganda and Viet Nam
Partners
41 hospitals and eye units, 23 of them government-run
FY2025 spending
¥7.84 billion (about US$51.6 million), 32% of charitable spending
Programme lead
Wanjiru Kamau, Nairobi
The work

What we fund

A cataract clouds the lens of the eye until light can no longer reach the retina in focus. It is the commonest cause of blindness in the world and one of the most treatable: the clouded lens is removed through a small incision and replaced with a clear plastic one, usually under local anaesthetic, usually in less than thirty minutes. In much of the world the operation is not available to people who need it, or costs more than a family earns in a season.

We pay partner hospitals a fixed sum for each operation on a patient who cannot pay, so that the hospital is never out of pocket for treating them. The sum covers the surgery, the lens, the follow-up visit and transport for the patient and one companion. It does not depend on which lens is used.

Fig. 2. Light through a cataract, and through an artificial lens Two eyes side by side. On the left, light enters a clouded natural lens and scatters across the back of the eye, so no sharp image forms. On the right, the clouded lens has been replaced by a thin artificial lens held in place by two curved arms, and the rays meet at a single point on the retina. Before: a clouded lens scatters light After: an artificial lens focuses it
Fig. 2What a cataract operation changes. The clouded natural lens is removed through an incision of about 2.5 mm and an artificial lens is folded in to take its place.

We also fund corneal transplants through eye banks in Nepal, Kenya and Viet Nam, and, for a small number of people blind from retinal disease, retinal implants: a microelectrode array placed on the retina that turns images from a camera into patterns of light the brain can learn to read. These are expensive, the results vary widely, and we fund them only through four specialist centres that agree to publish every outcome.

Training the people who operate

Nine in ten of the operations we fund are done by surgeons trained in the country where they work. We pay for training places at regional eye hospitals, for the simulators that let trainees practise before they touch a patient, and for twelve Kiroshi Fellowships each year, which bring surgeons to Tokyo, Nairobi or Lalitpur for a year of supervised work. The fellowships are described on the fellowships page.

Outcomes

Outcomes

We publish the results of every operation we pay for, including the ones that did not go well, and say how we measured them.

Results of cataract surgery in FY2025, patients followed up
  • Good outcome (6/12 or better)78.4%
  • Borderline (below 6/12 to 6/60)16.9%
  • Poor outcome (worse than 6/60)4.7%
Cataract operations funded, and their results, FY2021 to FY2025
YearOperationsFollowed upGood outcomeBorderlinePoor outcome
FY202138,90664.8%74.1%20.2%5.7%
FY202247,55167.0%75.9%18.9%5.2%
FY202352,01869.3%76.8%18.3%4.9%
FY202457,77070.4%77.6%17.6%4.8%
FY202561,24071.2%78.4%16.9%4.7%

Outcomes are measured as presenting visual acuity in the operated eye four to eight weeks after surgery, with whatever spectacles the patient actually wears. Good: 6/12 or better. Borderline: worse than 6/12, down to 6/60. Poor: worse than 6/60. These are the World Health Organization’s categories.

Outcome shares are of patients followed up, not of all patients. People who do not return are more likely to have had a poor result, so the true share of good outcomes is probably lower than shown. We estimate it at between 72% and 78% for FY2025.

Japanese fiscal years run from 1 April to 31 March. FY2025 is 1 April 2025 to 31 March 2026.

Source: Partner hospital returns, audited by the Foundation’s programme quality team. Data for each of the 41 hospitals, by year, is in the sight restoration dataset on the outcomes page.

Other sight restoration in FY2025
TreatmentProceduresCentresMeasure of successResult
Corneal transplant1,1406Graft clear at one year83.0%
Retinal implant3184Can locate a doorway unaided at six months61.6%
Paediatric cataract2,90411Presenting acuity 6/18 or better at one year58.2%
Trichiasis surgery7,6159No recurrence at one year89.4%

Each treatment has its own measure of success, set before the year began. Retinal implant results are self-reported in a structured interview and confirmed by a mobility test.

How we measure outcomes, and the full dataset

Conflicts
Grants and stories

Recent grants

Recent grants in this programme
GrantGranteeAmountAwarded
KF-2026-0102 Paediatric cataract surgery and one-year follow-up for children in Kavrepalanchok District (continuation)Bhaktapur Children’s Eye Programme
Nepal
¥118 million3 September 2026
KF-2026-0098 Outreach cataract camps in Kisumu County over four yearsLake Region Eye Trust, Kisumu
Kenya
¥172 million25 August 2026
KF-2026-0079 Outreach cataract camps in Bohol over three years (second phase)Cebu Island Vision Partnership
Philippines
¥37 million5 July 2026
KF-2026-0077 Paediatric cataract surgery and one-year follow-up for children in Mbeya RegionMbeya Highlands Eye Centre
Tanzania
¥98.3 million1 July 2026
KF-2025-0389 Outreach cataract camps in Bohol over three yearsCebu Island Vision Partnership
Philippines
¥173 million26 January 2026
KF-2025-0379 A day-surgery unit for cataract patients from the Mekong DeltaCần Thơ Mekong Eye Hospital
Viet Nam
¥31.1 million17 January 2026

All 89 grants in this programme

Stories

Programme lead: Wanjiru Kamau, Nairobi. Questions about this programme: programmes@kiroshi.org.