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2016, Number 3

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Rev Cub Oftal 2016; 29 (3)

Usefulness of Pentacam Scheimflug system for quantification of the posterior capsule opacity in pseudophakic patients with silicon oil-filled eyes

Veitía RZA, Cerna GA, López HI, Bauza FY, Pérez CE, Rodríguez SB

Language: Spanish
References: 96
Page: 444-464
PDF size: 210.72 Kb.


ABSTRACT

Objective: to determine whether the Pentacam Scheimpflug imaging system is useful for objective quantification of the posterior capsule opacity in pseudophakic patients with silicon oil-filled eyes.
Methods: observational, prospective and descriptive study conducted in ¨Ramon Pando Ferrer¨Cuban Institute of Ophthalmology in the period of April 2012 through April 2014. With the Pentacam Scheimpflug imaging system for the quantification of the posterior capsule opacity, 31 pseudophakic patients, who had undergone previous vitrectomy with silicon oil, were evaluated and their results were then compared with those of patients operated on through crystalline lens surgery and intraocular lens implantation (26 patients). To this end, the analyzed variables were age, sex, opacification degrees measured with slit lamp and average intensity in pixels in a 3mm round area selected from tomographs and analyzed by Image J 1.42 q software.
Results: in pseudophakic patients with silicon oil-filled eyes, the Scheimpflug system could not differentiate the different levels of the posterior capsule opacity (p= 0.210) and there was no agreement between both measurements (p= 0.120). The measurements taken by two observers in pseudophakic patients using silicon oil and slit lamp were similar (p= 0.042) and good correlation in those taken with the Scheimpflug system (r= 0.981). When comparing the Scheimpflug system measurements taken in the two groups of patients, it was observed that the intensity means in grades 1 and 2 were higher than those found in non-vitrectomized patients, but in grade 3, the difference was significant (p= 0.001).
Conclusions: Scheimpflug system is not useful to measure the posterior capsule opacity in previously vitrectomized patients who still have silicon oil-filled eyes.


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