Image quality of symmetrical spherical IOLs
Explanations
The measurement results of symmetrical spherical intraocular lenses (IOL) are listed below. All measurements are performed using the measuring stand developed at the Institute in accordance with EN/ISO 11979-2 [ISO11979]. In accordance with ISO, the IOL to be tested is operated under in vivo-like conditions within an artificial eye in a water bath that simulates the rest of the eye (cornea and aqueous humor).
Each lens is generally measured in two refractive powers (usually +13dpt. and +26dpt, or the closest value provided by the manufacturer) in order to visualize the effects of spherical aberrations. A graph of the measured MTF and the value of the Strehl ratio (comparison between measured IOL and diffraction-limited ideal IOL) as well as the ISO criterion (modulation at 100 line pairs/mm) are listed for each measured lens. Explanations of the following graphs can be found under quality criteria.
List of the IOLs examined:
| Manufacturer | IOL type | Measured refractive power |
| *Acri.Tec | *Acri.Smart 46S | +13dpt., +26dpt. |
| AcriMed | 42CSE | +13dpt., +26dpt. |
| Alcon | SA60AT | +13dpt., +26dpt. |
Detailed measurement results
*Acri.Tec - *Acri.Smart 46S
| +13dpt. | +26dpt. |
 |
 |
| Strehl ratio: 0.99 ISO criterion: 0.60 (ISO%: 94.9%) |
Strehl ratio: 0.85 ISO criterion: 0.57 (ISO%: 83.2%) |
AcriMed - 42CSE
| +13dpt. | +26dpt. |
 |
 |
| Strehl ratio: 0.95 ISO criterion: 0.56 (ISO%: 88.6%) |
Strehl ratio: 0.75 ISO criterion: 0.47 (ISO%: 68.6%) |
Alcon - SA60AT
| +13dpt. | +26dpt. |
 |
 |
| Strehl ratio: 0.86 ISO criterion: 0.50 (ISO%: 79.1%) |
Strehl ratio: 0.80 ISO criterion: 0.52 (ISO%: 75.9%) |
Contact
Prof. Dr. rer.nat. Wilhelm Stork
Tel. 0721 / 608 - 42510, wilhelm.stork∂kit.edu