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

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04387721

Enrollment

Registered

2020-05-14

Start date

2019-07-29

Completion date

2021-07-31

Last updated

2020-05-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Astigmatism, Cataract After, IOL, Visual Acuity

Keywords

CSF, Contrast Sensitivity, Trifocal IOL

Brief summary

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

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.

Interventions

OTHERKind of trifocal IOL

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

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

50 Years to No maximum

Healthy volunteers

Yes

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

Design outcomes

Primary

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

Secondary

Measure	Time frame	Description
Differences between groups	3 months following cataract surgery	Results will be compared between groups.

Countries

Spain

Contacts

Primary ContactEnrique Ordiñaga-Monreal, OD

e.ordinaga@clinicatacir.com934179803

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026