IOL Performance Reports

Multifocal IOL Performance Reports

Symfony

(Johnson & Johnson)

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Johnson & Johnson's Symfony lens is one of the very first extended depth-of-focus IOLs to be introduced. When it was brought into our country, it was introduced under the name 'continuous focus'.

Vision through the mobile model eye

Symfony (Johnson & Johnson), daytime, building, pupil 3.8 mm

With the Symfony continuous-focus IOL, distant buildings appear slightly hazy, as if covered in fog, compared with a monofocal IOL. This is a phenomenon typically seen with diffractive multifocal IOLs.

Symfony (Johnson & Johnson), nighttime, building, pupil 4.8 mm

With the Symfony continuous-focus IOL, halos and glare around bright lights at night appear more pronounced than with a monofocal IOL. This is a phenomenon typically seen with diffractive multifocal IOLs. However, the halos appear somewhat smaller than with other diffractive multifocal IOLs.

Symfony (Johnson & Johnson), image of the eye chart at each distance, pupil 3.8 mm

Symfony IOL (Johnson & Johnson) appear like biifocal IOLs. At 6 meters, USAF resolution target appears slightly hazy compared to monofocal IOLs. Blurring was observed as the model eye got closer and the image became clear again at approximately 90 cm. Subsequently, the clarity decreased as the distance decreased. This showed that this lens functions like a bifocal IOL.

Distance6m

Symfony (Johnson & Johnson), night road, pupil 4.8 mm

This is a video of an actual nighttime road recording taken with a portable model eye.
With the Symfony continuous-focus IOL, halos are seen around bright lights (traffic lights, vehicle headlights, taillights) compared with a monofocal IOL.
This is a phenomenon typically seen with diffractive multifocal IOLs.
However, the light scatter appears somewhat smaller than with other diffractive multifocal IOLs.

Manufacturer

Country of manufacture

Type

Diffractive pattern size (mm)

Number of focal points

Add power (D)

Intermediate / near distance, etc.

Color

Hydrophilic / Hydrophobic

Spherical / Aspheric

Asphericity (µm)

Refractive index

Abbe number

UV filter

Violet light filter

Power range (D)

Toric IOL availability

Haptic design

The specifications above are based on data provided by the IOL manufacturer or its distributor.
An IOL with a higher refractive index is thinner at the same dioptric power.
Abbe number: measured for optics exposed to air; a higher value means less chromatic aberration.

Q&A

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