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Multifocal IOLs that maintain distance focus and improve near vision have been developed to reduce spectacle dependence.Multifocal IOLs improve patient performance of near-vision tasks, such as reading crafts, hobbies, and social activities to a greater extent than do monofocal IOLs. However, halos and reduced contrast sensitivity have been associated with multifocal IOLs and are common reasons for patient's dissatisfaction.Trifocal technology has been developed to create intermediate focus to overcome these difficulties. Continuous reports of the visual outcomes of the FineVision trifocal IOLs are encouraging.
Monofocal IOLs, which provide effective distance vision, currently account for the majority of IOLs implantations. Patients who have undergone cataract surgery with implantation of monofocal IOL may require spectacles to perform near-distance (e.g., reading) or intermediate-distance (e.g., using a computer) tasks depending on their visual demandsMultifocal IOLs that maintain distance focus and improve near vision have been developed to reduce spectacle dependence.Multifocal IOLs improve patient performance of near-vision tasks, such as reading crafts, hobbies, and social activities to a greater extent than do monofocal IOLs. However, halos and reduced contrast sensitivity have been associated with multifocal IOLs and are common reasons for patient's dissatisfaction.Trifocal technology has been developed to create intermediate focus to overcome these difficulties. Continuous reports of the visual outcomes of the FineVision trifocal IOLs are encouraging.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Trifocal Diffractive Intraocular Lens (FineVision) | Experimental | 36 eyes having implantation of trifocal diffractive IOL (FineVision) |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Trifocal diffractive intraocular lens | Device | Trifocal IOL having foldable single-piece fully diffractive pupil dependent aspheric IOL. Which have been made of hydrophilic acrylic with an ultraviolet (UV) and blue light inhibitor. It has an optic diameter of 6.15 mm and an overall diameter of 10.75 mm; it has +3.5D additional power for near vision and +1.75 D additional power for intermediate vision, consisting of 26 diffractive steps. |
| Measure | Description | Time Frame |
|---|---|---|
| Visual Acuity | Current study used Sloan chart (Good - Lite Co, USA) for intermediate, Snellen chart for far and Landolt ring chart for near vision | 3 months |
| Defocus curve | examined monocular and binocular after correcting distant VA refractive error then inserting defocus lenses 0.50-D focus steps from (+1.50 to -3.50 D) in the trial frame | 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| Contrast sensitivity | using the CSV-1000 contrast test. | 3 months |
| Visual Satisfaction Questionnaire | Questionnaire patient satisfaction protocol mediated by (PhysIOL Lige, Belgium). |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Ehab Mossallam, PhD | Alexandria Faculty of Medicine | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Alexandria Faculty of Medicine | Alexandria | Egypt |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 33849466 | Derived | Zein El-Dein AA, Elmassry A, El-Hennawi HM, Mossallam EF. Objective and subjective evaluation of trifocal diffractive intraocular Lens after cataract extraction with phacoemulsification: a prospective clinical study. BMC Ophthalmol. 2021 Apr 14;21(1):179. doi: 10.1186/s12886-021-01937-z. |
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| ID | Term |
|---|---|
| D012030 | Refractive Errors |
| ID | Term |
|---|---|
| D005128 | Eye Diseases |
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This is a prospective, non-comparative, non-randomized study including 36 eyes had implantation of trifocal diffractive IOL
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| 3 months |