[Biometry in cataract camps. Experiences from north Kenya]

Ophthalmologe. 2010 Apr;107(4):354-8. doi: 10.1007/s00347-009-2021-2.
[Article in German]


Background: Biometry has the potential to improve refractive outcomes of cataract surgery in developing countries. However, the procedure is difficult to carry out in remote areas.

Patients and methods: The feasibility of automated biometry using portable devices was assessed in an eye camp in a remote Kenyan community and reasons for failure were documented. PC-IOLs in the range of 17-27 dioptres (dpt) were implanted and a model was created to predict spherical refractive error if a standard 22 dpt lens had been used.

Results: In 104 out of 131 eyes (80%) biometry was possible. Failure to obtain K-readings in eyes with coexisting corneal pathology was the main limiting factor. The calculated mean IOL strength to achieve emmetropia was 21.56 dpt with a SD=1.96 (min: 14.78 dpt, max: 27.24 dpt). If 22 dpt lenses had been implanted around 20% would have had an error of more than 2 dpt and 7% an error of more than 3 dpt.

Conclusion: Biometry is a challenging procedure in remote areas where comorbidities are common. However, without biometry and implantation of different IOL powers poor refractive outcome can be expected in around 20% of patients.

MeSH terms

  • Adult
  • Biometry / methods*
  • Cataract / diagnosis*
  • Cataract / epidemiology*
  • Cataract Extraction / statistics & numerical data*
  • Female
  • Humans
  • Kenya / epidemiology
  • Male
  • Middle Aged
  • Retinoscopy / statistics & numerical data*
  • Rural Health Services / statistics & numerical data*
  • Treatment Failure
  • Treatment Outcome