A comparative study of the discrepancy in the horizontal white-to-white measurement using Calipers Vs. Pentacam
Yahya Abdulla Hamed Khedr;
Abstract
The accurate measurement of the horizontal corneal white-to-white diameter is essential and has multiple applications in the field of ophthalmology whether medical or surgical (Chen and Osher, 2016).
There are many means of measuring the horizontal white-to-white, which includes the Pentacam, the IOL Master and Manual Calipers. Both the Pentacam and Manual Calipers measure the external white-to-white diameter, whereas the IOL Master measure the internal white-to-white diameter.
The current accepted standards of normal horizontal white-to-white diameter is greater than 11.0 mm and less than 13.0 mm (Chen and Osher, 2016).
The Pentacam is considered to be a fast, non-contact device with the patient sitting in front of the camera. This allows for the patient to be comfortable without the need to use topical anaesthetics nor causing corneal aberrations (Dick, 2005).
As for the Manual Calipers, we will be using the Bausch & Lomb Storz Ophthalmics E-2404 Castroviejo Caliper, which
There are many means of measuring the horizontal white-to-white, which includes the Pentacam, the IOL Master and Manual Calipers. Both the Pentacam and Manual Calipers measure the external white-to-white diameter, whereas the IOL Master measure the internal white-to-white diameter.
The current accepted standards of normal horizontal white-to-white diameter is greater than 11.0 mm and less than 13.0 mm (Chen and Osher, 2016).
The Pentacam is considered to be a fast, non-contact device with the patient sitting in front of the camera. This allows for the patient to be comfortable without the need to use topical anaesthetics nor causing corneal aberrations (Dick, 2005).
As for the Manual Calipers, we will be using the Bausch & Lomb Storz Ophthalmics E-2404 Castroviejo Caliper, which
Other data
| Title | A comparative study of the discrepancy in the horizontal white-to-white measurement using Calipers Vs. Pentacam | Other Titles | دراسة مقارنة التفاوت في قياس قطر القرنية الأفقي باستخدام البرجل اليدوي مقابل الكاميرا الخماسية | Authors | Yahya Abdulla Hamed Khedr | Issue Date | 2018 |
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