Related Experiment Videos
Quantification of lens opacification with a commercially available lensometer
S J Tuft1, F W Fitzke, J Lawrenson
1Department of Clinical Ophthalmology, Moorfields Eye Hospital, London.
The British Journal of Ophthalmology
|February 1, 1990
Summary
The lens opacity meter (LM701) shows a significant relationship with visual acuity and patient age. This device reliably measures the impact of lens opacities on vision.
Area of Science:
- Ophthalmology
- Biomedical Optics
Background:
- Lens opacities, a common cause of visual impairment, necessitate accurate measurement.
- Existing methods for assessing lens opacity may not fully correlate with visual acuity.
Purpose of the Study:
- To evaluate the clinical reliability of the LM701 lens opacity meter.
- To determine if LM701 readings correlate with visual acuity and patient demographics.
Main Methods:
- A clinical trial was conducted using the LM701 lens opacity meter.
- Measurements were correlated with Snellen visual acuity, patient age, refractive error, pupil size, and near visual acuity.
Main Results:
- A significant relationship was found between LM701 readings and Snellen acuity (p<0.001).
- Patient age also showed a significant correlation with LM701 readings (p<0.001).
- Differences in LM701 readings between eyes correlated with differences in Snellen acuities.
Conclusions:
- The LM701 lens opacity meter provides reliable clinical information on the effect of lens opacities on visual acuity.
- LM701 readings are significantly influenced by visual acuity and patient age.
- The device's utility is established for assessing visual impairment due to lens opacities.