Reach Us +1-504-608-2390
Prediction of Refractive Stabilization after Cataract Surgery...Is it Possible? | OMICS International
ISSN: 2155-9570
Journal of Clinical & Experimental Ophthalmology

Like us on:

Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on Medical, Pharma, Engineering, Science, Technology and Business
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Prediction of Refractive Stabilization after Cataract Surgery...Is it Possible?

Victoria de Juan*
Institute of Applied Ophthalmobiology (IOBA-Eye Institute), University of Valladolid, Spain
Corresponding Author : Victoria de Juan
Optometrist, MSc. IOBA Eye Institute
University of Valladolid, Paseo de Belén
17, 47011, Valladolid, Spain
Tel: (+34) 983 423559
Fax: (+34) 983 423274
E-mail: [email protected]
Received November 22, 2011; Accepted November 22, 2012; Published November 28, 2012
Citation: de Juan V (2012) Prediction of Refractive Stabilization after Cataract Surgery…Is it Possible? J Clin Exp Ophthalmol 3:e113. doi:10.4172/2155-9570.1000e113
Copyright: © 2012 de Juan V. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Related article at
DownloadPubmedDownloadScholar Google

Visit for more related articles at Journal of Clinical & Experimental Ophthalmology

The goals of modern cataract surgery include restoration of vision as completely and rapidly as possible while minimizing complications. At the same time, postoperative refractive errors should be negligible [1]. Although the refractive outcome is not the unique measure to determine the success, low refractive errors with rapid stabilization improve patient satisfaction and quality of life [2]. However, a pronounced, transient postoperative corneal swelling lasting approximately two weeks is sometimes noted after phacoemulsification surgery [3]. Evaluation of postoperative corneal swelling is easily done with ultrasonic or optical pachymetry and is important because swelling can cause refractive changes that limit fast visual rehabilitation. There are few studies evaluating stabilization of refraction after cataract surgery with minimal changes after two weeks [4,5]. Most of those studies were retrospective and evaluated the spherical equivalent, but it is more accurate to distinguish between spherical and cylindrical refraction. In a prospective study, we found that refraction (spherical and cylindrical component) was stabilized one week after surgery [6]. Nevertheless, we caution about the general applicability of our findings. Other than the presence of cataracts, we included only healthy eyes, the surgery was performed by the same experienced surgeon who used the same technique throughout, and there were no surgical complications. Therefore, our results can be extrapolated only to populations with similar characteristics.
To meet the high expectations of patients following cataract surgery, further studies and advances are needed in all areas, including methods of predicting the moment of refractive stabilization (RS). This information could be useful to surgeon to improve the information given to patients before surgery. Besides, it would reduce the visits until the final prescription.
However, no comprehensive data on the relationship between some factors (pre and post surgical) and refractive stabilization have been reported. A few months ago, we studied 163 eyes (mean age of 66.14 years) undergoing cataract surgery. Preoperative predictors included age, lens opacity, optical biometry, and automated refraction, among others. Also intraoperative predictors (surgical technique, ultrasound time, aspiration time and flow rate) were included.
The predictive equation for RS was power LIO+0.28 axial length where h(t) is the probability of RS at time t and h0(t) is the baseline probability when all the explanatory variables are zero. Discrimination and calibration of the final model were good, but today it is still not possible to predict when the refraction stabilizes. It is necessary to evaluate this predictive equation by means a multicenter and prospective study.
In summary, prediction of refractive stabilization will be possible but there is still a lot of work to do.

Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Article Usage

  • Total views: 12528
  • [From(publication date):
    December-2012 - Nov 15, 2019]
  • Breakdown by view type
  • HTML page views : 8697
  • PDF downloads : 3831