الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 86 |  |  |
| | | from | 86 | | |
Abstract
A precise calculation of the intraocular lens power is of crucial importance to achieve good results after refractive cataract surgery. Accurate calculations primarily depend on the accuracy of preoperative biometric data, including the axial length of the eye (AL), the anterior chamber depth (ACD), and the keratometry values (K), and the precision of the formula applied to calculate IOL power. Incorrect calculation of the lens power is the main reason for patient dissatisfaction and lens replacement in modern cataract surgery.
If measurement using ultrasound biometry is done correctly, results of both methods correspond significantly and the methods are mutually replaceable.
The advantages of the IOL master include high precision, noncontact and noninvasive measurements, speed, and superior patient comfort. Among the disadvantages are the high cost of the equipment and the inability to measure dense cataracts, some serious corneal pathologies, lid abnormalities, and eyes with poor fixation.
Conclusion
We can conclude that Optical biometry with the IOL master proved to be little more accurate than ultrasound biometry for IOL power calculation where A-scan is still mandatory.
Recommendation
Using of the two biometry techniques per the same eye and compare results in next studies.