Arredondo-Flores S, Castellanos MA, Ruiz-Quintero N, Naranjo-Tackman R

Language: Spanish
References: 11
Page: 106-109
PDF size: 174.80 Kb.

ABSTRACT

Objective: To determine the reproducibility of the iridocorneal angle measurement obtained with a Pentacam® camera, a non invasive highly validated and reliable method for anterior segment measurement thru a dynamic measurement of the 360º of the iridocorneal angle.
Methods: This is a prospective, descriptive, longitudinal and observational clinical trial carried out in 40 eyes without refractive anomalies under mesopic conditions (84cdl). The iridocorneal measure was made in two meridians in its 4 clock hours (XII, VI, III, IX), and the mid angle in 25 Pentacam® measurements, in 10 different takes with a week interval.
Results: The study was done in 40 eyes measuring in 10 different times in 4 clock hours, obtaining a mean angle of 37.90º from this values, with a variability of 1.63; The angle of III o’clock obtained a mean of 41.7º, a range of 41.62 to 40.52º and the variability of 1.10, the angle of VI o’clock with a mean of 37.79ª, a range of 37.19º to 36.40º, with a variability of 0.78, in the angle of IX o’clock obtained a mean of 40.73º, a range of 41.17º to 40.24º and a variability of 0.88, and in the angle of XII o’clock obtained a mean of 35.86º, a range of 36.72º to 35.1º, with a variability of 1.71.
Conclusions: The Pentacam® allows us to make a non-invasive exploration of the iridocorneal angle without measurement variations, with high reproducibility and patient comfort.

REFERENCES

1. Merklinger H. Scheimpflug’s Patent, Photo Techniques, 1996, pp. 105-108.

2. Neuhann H. Perspectiva del Sistema Pentacam: Entendiendo sus Beneficios. The Hignlights 2007 pp. 1-3.

3. Laiz M. La Cámara de Scheimpflug rotacional Pentacam; Actualizaciones Tecnológicas en Oftalmología 2007, pp1-6.

4. Pentacam, Instruction Manual Measurement and Evaluation System for the anterior segment of eye. pp. 22-24.

5. Rosales P y cols. Scheimpflug imaging; Optical Distortion correction. Optom Vis Sci 2005; pp. 99-110.

6. Lackner B y cols. Validity and Repeatability of Anterior Chamber Depth Measurements with Pentacam and Orbscan. Optom Vis Sci 2005; 82(9): 858-861.

7. Rabsilber T y cols, Anterior chamber measurements using Pentacam rotating Scheimpflug camera. J Cataract Refract Surg, 32:456-459.

8. Pavlin C. Ultrasound Biomicroscopy of the eye. Ultrasound Biomicroscopy anatomy of the normal eye and adnexa. Spring- Verlag 1995. pp. 47-50.

9. Pavlin C. Ultrasound Biomicroscopy of the eye. Ultrasound Biomicroscopy anatomy of the angle. Spring-Verlag 1995. pp. 51-53.

10. Liesegang T y cols. Glaucoma, American Academy of Ophthalmology Angulo iridocorneal. 2007-2008. pp. 30-35.

11. Elbaz U y cols. Comparison of different Techniques of anterior Chamber Depth and Keratometric Measurements. Am J Ophthalmol 2007; 143(1):48-53.1).