Low Vision, Presbyopia
Conditions
Keywords
cataract, multifocal IOL
Brief summary
The purpose of this study is to identify ocular biomarkers that can predict the success of phacoemulsification with bilateral AT LISA try 839MP (Carl Zeiss Meditec AG) implantation to achieve satisfactory post-post-operativly spectacle-free vision. Social, biometric and patient reported outcomes will be evaluated.
Detailed description
Pre-operatively all patients were submitted to a comprehensive ophthalmic history and examination including, corneal topography, and aberrometry (Pentacam), biometry (IOLMaster 700, Carl Zeiss Meditec AG, Jena, Germany), specular microscopy (CEM 539, Nidek Co Ltd.), and macular and papillary Optical Coherence Tomography (Cirrus 4000 Hd OCT, Carl Zeiss Meditec AG). All surgeries were performed by the same surgeon done by standard phacoemulsification with in-the-bag IOL placement. Patients had both eyes operated within a week. Patients were assessed at day 1, 6, and month 3 after surgery. Six months post-operatively, refraction and slit-lamp examination was performed, and patients asked to complete the patient reported outcome questionnaire that evaluates visual satisfaction, spectacle independence and dysphoptsia like-symptoms.
Interventions
OTHERPatient Reported Outcomes / Biometric data revision
Multivariate statistical analysis will be done to identify the reported biomarkers to characterize patients into the following categories: satisfied without dysphotopsias, unsatisfied with dysphotopsias, satisfied with dysphotopsias, unsatisfied without dysphotopsias.Main outcome measures will be photic phenomena at 6 months of follow-up in correlation with the following pre-surgical parameters: macular ganglion cell complex thickness and/or total ocular and corneal higher-order aberrations (coma, trefoil, spherical aberration). Patients with known contributing factors for the development of dysphotopsias (such as residual refractive error, IOL decentration, posterior capsular opacification) will be excluded from the analyzis.
Sponsors
Hospital dos Lusíadas
Study design
Observational model
OTHER
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
45 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Age ≥ 45 years old with clinical identified bilateral cataracts * Patients that want to have good vision most of the time without glasses at all distances * Highest limit of mesopic pupil of 6 mm * Corneal total higher-order aberration (HOA) ≤ 0.5 μm * Angle kappa ≤ 0.58 mm * Absence of cornea ectasia diagnostic criteria.
Exclusion criteria
* Patients with moderate or severe dry eye syndrome * Ocular comorbidities such as corneal, retinal or optic nerve disease * Previous ocular surgeries * Patients with unreal post-surgical visual expectations * Patients with known mild cognitive impairment or dementia.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Correlation between macular ganglion cell thickness and contrast sensitivity in refractive cataract surgery patients - Identifying cutoff values that predict favourable mIOL adaptation | December 2023 | Evaluate if there is a correlation between macular ganglionar cell complex thickness and post-operative contrast-sensitivity at 6 months post-op |
| HOA detailed profile impact in dysphotopsia incidence after refractive cataract surgery - - Identifying cutoff values that predict favourable mIOL adaptation | December 2023 | Evaluate if specific HOA have a greater impact and association with dysphotopsias under the same IOL platform at 6 months post-op |
Countries
Portugal
Outcome results
None listed