Influence of Residual Astigmatism on Visual Acuity in Patients Undergoing Cataract Surgery With Trifocal Intraocular Lens Implantation

Study Overview
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Brief Summary
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MAIN OBJECTIVE: To assess the influence of residual astigmatism on visual acuity in the different lens foci in patients operated on for cataracts with a trifocal intraocular lens implant. SECONDARY OBJECTIVE: To study the influence of residual astigmatism on the visual quality of the patient in the far focus and to determine if there are differences of affectation in the two study groups.

Detailed Description
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It will be studied how small residual astigmatisms after cataract surgery degrade the visual acuity of patients in the three focal planes of trifocal IOLs. Not only VA will be studied, but also visual quality through contrast sensitivity curves.

Official Title
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Influence of Residual Astigmatism on Visual Acuity in Patients Undergoing Cataract Surgery With Trifocal Intraocular Lens Implantation

Conditions
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IOL, Cataract After, Astigmatism, Visual Acuity

Intervention / Treatment
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* Other: Kind of trifocal IOL


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Bilateral surgery performed by the same surgeon IOLs implanted IOLs FineVision (MicroF) and FineVision Toric (PodFT) Patients with pre-surgery corneal astigmatism less than 2.5 D Patients whose pupillary diameter in physiological position (conditions of lower photopic pupil) not over 4 mm. Exclusion Criteria: Post-surgical refractive residual astigmatisms ≧ 1.55D Previous corneal or intraocular surgeries Active diseases Eye complications during the 3-month follow-up

Ages Eligible for Study
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Minimum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Trifocal IOL(Finevision IOL, PhysIOL)<br>We will divide the sample into two groups of patients depending on the IOL implanted First group: FineVision | Other: Kind of trifocal IOL<br>* Patients will be divided between groups based on pre-surgery corneal astigmatism. Group FineVision is made up of patients with corneal astigmatism less than 1 D. Groups FineVision Toric is made up pf patients with corneal astigmatism more than 1.25 D<br>* Other names: FineVision Toric IOL;|
| Trifocal toric IOL (Finevision Toric IOL, PhysIOL)<br>We will divide the sample into two groups of patients depending on the IOL implanted: Second group: FineVisionToric | Other: Kind of trifocal IOL<br>* Patients will be divided between groups based on pre-surgery corneal astigmatism. Group FineVision is made up of patients with corneal astigmatism less than 1 D. Groups FineVision Toric is made up pf patients with corneal astigmatism more than 1.25 D<br>* Other names: FineVision Toric IOL;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Visual Acuity | Visual acuity will be measured at distance, intermediate distance (67 cm) and near (40 cm). Visual acuities will be obtained with logarithmic notation | 3 months following cataract surgery | 
| Contrast Sensitivity Function (CSF) | Contrast sensitivity will be measured at far, intermediate distance (67 cm) and near (40 cm). | 3 months following cataract surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Differences between groups | Results will be compared between groups. | 3 months following cataract surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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CSF, Contrast Sensitivity, Trifocal IOL