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Published on: December 1, 2023
[Biometry in cataract camps. Experiences from north Kenya]
S Briesen1, H Roberts, J Karimurio
1Kwale District Eye Centre, 901-801, Mombasa, Kenia. sebbriesen@yahoo.de
Summary
Automated biometry in remote areas is feasible, achieving 80% success in a Kenyan eye camp. This improves cataract surgery outcomes, though corneal issues can limit results.
Area of Science:
- Ophthalmology
- Medical Biometry
- Public Health
Background:
- Biometry can enhance refractive outcomes in cataract surgery, particularly in developing nations.
- Implementing biometry in remote settings presents significant logistical challenges.
Purpose of the Study:
- To assess the feasibility of automated biometry using portable devices in a remote Kenyan community.
- To identify factors limiting the success of biometry in such settings.
Main Methods:
- Automated biometry was performed using portable devices during an eye camp.
- Reasons for biometry failure were systematically documented.
- A predictive model was developed for refractive error based on implanted intraocular lens (IOL) power.
Main Results:
- Biometry was successful in 80% (104/131) of eyes.
- Coexisting corneal pathology was the primary reason for failure to obtain keratometry (K)-readings.
- The calculated mean IOL power for emmetropia was 21.56 dpt (SD=1.96).
- Implanting a standard 22 dpt lens could result in >2 dpt error in ~20% and >3 dpt error in ~7% of cases.
Conclusions:
- Biometry in remote areas is challenging due to common comorbidities.
- Without accurate biometry and appropriate IOL selection, approximately 20% of patients may experience poor refractive outcomes after cataract surgery.