Visual Functions, Dysphotopsia And Patient Satisfaction After The Implantation Of An Extended Depth- Of-Focus Lens, And A Monofocal Model Of The Same Platform

Considering our patients’ needs when choosing an intraocular lens (IOL) is a matter of great importance. Extended Depth of Focus (EDoF) IOLs can offer personalized solution when excellent intermediate vision is just as important as distance vision. A real EDoF IOL can provide spectacle independence for computer use, outdoor activities and sports, as well.

The present study examined and compared the corrected and uncorrected visual acuities (distance, intermediate, near) and patient-reported visual outcomes (visual functions, visual disturbances, and satisfaction) after the implantation of the Bi-Flex 877PEY and the monofocal BiFlex 877PAY hydrophobic IOL models.

Ophthalmology Department, Cholnoky Ferenc Hosiptal and Retinaszerviz Kft. 8200 Veszprém, Kórház u. 1., Hungary

Ophthalmology Department, B.A.Z. County Central Hosiptal; 3526 Miskolc, Szentpéteri kapu. 72-76.Hungary

Ophthalmology Department, Petz Aladár Teaching County Hosiptal; 9024 Győr, Vasvári Pál u. 2-4., Hungary

Two different IOL models were implanted binocularly (Bi-Flex 877PEY: 30 patients/60 eyes; BiFlex 877PAY: 10 patients/20 eyes). Refractive outcomes and visual acuities (uncorrected and corrected distance, UDVA, CDVA; distance-corrected intermediate, DCIVA, and near, DCNVA) were measured at 3 months postoperatively. Patients were asked to complete a vision function questionnaire and evaluate spectacle independence, the difficulty of performing simple daily activities and report their level of satisfaction. Positive dysphotopsia (halo, glare) and other visual disturbances were rated separately by their discomfort caused.

Both examined IOL models resulted in favorable and comparable refractive and visual outcomes. 90% of Bi-Flex 877PEY ELON patients rated their postoperative vision as very or rather satisfied. The majority of patients could perform daily activities without severe difficulty, however, some difficulties could be observed in low light conditions (e.g. driving at night) and with near vision activities. The discomfort caused by halos and glare were considerably low. The distance visual acuities were comparable with the monofocal comparator, while the intermediate and near visual acuities were significantly better by the EDoF IOL (p<0,0001).

The examined ELON IOL model provides real EDoF performance with an excellent distance and intermediate vision. Intermediate, as well as near visual acuities are superior to that observed with the monofocal comparator. The ELON lens ensures high quality vision, and is associated with a low amount of dysphotopsia, which does not differ from that experienced by the patients implanted with the monofocal comparator. Our results suggest that the ELON IOL is a safe and efficient solution for cataract patients with an active lifestyle.