Pseudophakos decentration produces symptoms such as glare, halos, and other visual aberrations. We have reviewed 161 eyes of patients who had an intercapsular cataract extraction with intraocular lens (IOL) implantation with a follow-up of at least six months. Mean decentration was 0.54 mm. It was 0.46 mm for the lenses implanted symmetrically in the bag, 0.65 mm for those implanted in the sulcus, and 0.91 mm for those implanted asymmetrically (bag-sulcus). The differences between the lenses fixated in the bag and those asymmetrically situated were statistically significant (P less than .001). Circular looped lenses (360-degree encircling loop) decentered less (mean 0.28 mm) than modified C-loop lenses (mean decentration 0.63 mm) and modified J-loop lenses (mean decentration 0.60 mm). These differences were statistically significant (P less than .001). The differences were also significant if we considered only the lenses implanted in the bag (mean decentration 0.20 versus 0.59 and 0.54, respectively) (P less than .0001).

Elschnig pearl PCO is a self-limiting process. After posterior capsulotomy, cells proliferated and attempted to occlude the capsular opening. Later, a reduction in the amount of cells was observed, leading to a completely clear posterior capsule in most eyes.

Material and Method: Cross-sectional study. 19 medical interns, 11 surgical residents and 15 surgeons of Hernán Henríquez Aravena Hospital and surgery department of Universidad de La Frontera were included. Applied instrument: MBI questionnaire in its adaptation of the Spanish population. Calculation of measures of central tendency and percentage, as well as comparison of variables through t Student and values of Cronbach's alpha coefficients were performed. Results: Regarding the MBI scale, the overall prevalence of the syndrome was 64.4%, whereas, by dimensions, emotional exhaustion showed a prevalence of 76%; Low personal accomplishment at work, 55%, and depersonalization 62%. Statistically significant differences were found in emotional exhaustion and depersonalization according to socio-demographic variables: men and women, single and married, subjects without children and with children, whether or not they take emergency room shifts, obtaining higher levels in women, unmarried, subjects without children and those who take emergency shifts. Conclusions: It is accepted that the central triggering factor is the high emotional exhaustion that gradually leads to a state of emotional and cognitive distancing in their daily activities, with the consequent inability to respond to demands of the service. In this distancing occurs depersonalization, indifference and cynical attitudes toward responsibilities or towards people. Therefore, measures should be taken to try to reduce the prevalence of this syndrome in our medical interns and residents, mainly.

Intraocular lens (IOL) decentration was studied in a series of 569 consecutive eyes that had extracapsular cataract extraction (ECCE) and posterior chamber IOL implantation. In 383 of the eyes, an envelope capsulotomy (EC) was performed; in 186, a continuous curvilinear capsulotomy (CCC). In 33 eyes, the anterior capsule had one radial tear that reached the lens equator. In all eyes, IOL decentration was determined more than six months after surgery. Mean IOL decentration was 0.42 +/- 0.02 mm in the EC eyes and 0.27 +/- 0.01 mm in the CCC eyes (P < .001). In the CCC eyes, mean IOL decentration was 0.23 +/- 0.02 mm when the anterior capsule had no tears and 0.42 +/- 0.06 mm when it had one radial tear (P < .01). In the EC eyes, mean decentration was less with lenses with a total diameter of 11.0 mm or less and 360 degree circular loops (compressible disc and circular open-loop lenses) than with C- and J-loop lenses with a total length of 13.5 mm to 14.0 mm. With the C- and J-loop lenses in all three capsulotomy groups, mean decentration was related to the presence and number of tears in the anterior capsule: 0.58 mm in the EC eyes, 0.41 mm in the CCC with tear eyes, and 0.23 mm in the CCC without tear eyes. A similar relationship was seen with the bag-implanted lenses: 0.48 mm in the EC eyes, 0.28 mm in the CCC with tear eyes; 0.22 mm in the CCC without tear eyes.

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