A Comparative Study on Stereopsis, Aniseikonia, and Associated Symptoms in Patients with Bilateral Pseudophakia with and without Anisometropia | Chapter 12 | Current Practice in Medical Science Vol. 11

 In order to investigate stereopsis, aniseikonia, and associated symptoms, the study examined bilateral pseudophakia with and without anisometropia. Patients with senile cataracts who had previously been scheduled for phacoemulsification with an IOL implant in both eyes were included in this cross-sectional study. Patients were split into two groups: the control group (n = 69) and the anisometropia group (n = 42), who had interocular post-surgical refraction differences of SE 1.00 D and SE 1.0 D, respectively. The statistical analysis of the data employed regression analysis, multivariate analysis, and univariate analysis models. An negligible difference (p = 0.766) separated the cataract surgery-induced aniseikonia in the control group (0.64% 1.41%) from the anisometropia group (0.62% 1.76%). The stereoacuity value was 1.95 0.17 log. revealed a significant difference (p 0.0001) between 2.12 0.22 log10 seconds of arc in the anisometropia group and 10 seconds of arc in the control group. With a negligible difference (p = 0.387), the mean score of symptoms related with aniseikonia was 1.41 0.46 in the control group and 1.47 0.45 in the aniso- metropia group. Axial length difference (18.06 percent), refractive error difference (44.53 percent), aniseikonia (25.71 percent), and IOL power difference all played independent roles in the anisometropia group's stereopsis prediction (11.71 percent). The study showed that stereopsis, aniseikonia, or other associated symptoms were not significantly worse in bilateral pseudo-dophakia with anisometropia smaller than 3D.

Author(s) Details:

Marcelo Tannous,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

Daniel Dantas,
Department of Computer, Federal University of Sergipe, Aracaju, Brazil.

Paulo Roberto de Arruda Zantut,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

David Tayah,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

Pedro Carricondo,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

Amaryllis Avakian,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

Milton Ruiz Alves,
Departament of Ophthalmology and Otolaryngology of HOSPITAL das Clinicas from University of São Paulo Medical School, Sao Paulo, Brazil.

Please see the link here: https://stm.bookpi.org/CPMS-V11/article/view/8036

Determination of Anterior Segment Optical Coherence Tomography for Demonstrating Posterior Capsular Rent in Posterior Polar Cataract | Chapter 13 | New Horizons in Medicine and Medical Research Vol. 4

 Aims/Purpose: To describe the use of anterior segment optical coherence tomography (AS-OCT) to detect the presence of a pre-existing posterior capsule defect in patients with posterior polar cataract prior to surgery.

Methods: Three patients with posterior polar cataract were assessed preoperatively using AS-OCT, which revealed an intact posterior capsule in one patient and a pre-existing posterior capsule deficit in the other two patients that was not visible by slit-lamp examination. Phacoemulsification and intraocular lens implantation were performed on all of the patients.

In our case studies, we used AS-OCT, which is an imaging technique that overcomes the constraints of slit-lamp scanning. In cases 2 and 3, the posterior capsule was ruptured, whereas case 1 had an intact capsule. Because of the optical density of the overlaying lens opacity, this imaging technology may be unable to detect a "genuine" capsular defect, which could lead to false positive results.

Conclusion: In these patients, AS-OCT could be an extra valuable imaging modality for surgical planning and patient consultation.


Author(S) Details

George D. Kymionis
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece and Bascom Palmer Eye Institute, University of Miami, Miller school of Medicine, Miami, Florida, USA.

Vasilios F. Diakonis
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece.

Dimitrios A. Liakopoulos
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece.

Konstantinos I. Tsoulnaras
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece

Nektarios E. Klados
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece.

Ioannis G. Pallikaris
Department of Medicine, Institute of Vision and Optics, University of Crete, Heraklion, Crete, Greece.

View Book:- https://stm.bookpi.org/NHMMR-V4/article/view/6375