Posters

Two study comparisson of visual outcome and subjective symptoms in photopic and mesopic conditions of two different models of a non rational symmetric EDOF IOL: Lentis Comfort and Femtis Comfort

Poster Details

First Author: D.Holland GERMANY

Co Author(s):    I. Matthaie   F. Rüfer                 

Abstract Details

Purpose:

Comparisson of results regarding patient satisfaction, visual symptoms and visual outcome in two prospective clinical trials. The Optic of both models is designed to achieve the best uncorrected distance and intermediate visual acuity, minimizing visual disturbances like glare, halos or starbusts and to enable good night driving ability. The difference of the two models is the haptic, which is in the Lentis Comfort a standard plate haptic and in the Femtis Comfort designed to achieve an enclavation in the capsulotomy. Influence on this difference on the clinical outcome shell be investigated.

Setting:

nordBLICK Augenklinik Bellevue

Methods:

66 cataractous eyes of 33 consecutive patients (12m, 21f) with a mean age of 69±8 years were included into the Lentis Comfort study. In the still ongoing prospective study with the Femtis Comfort 56 eyes of 28 cataract patients were included so far.The occurrence of visual symptoms and patient satisfaction was evaluated with a semi-quantitative questionnaire. In one study standard cataract was performed. In the second study a femto Laser assisted cataract surgery was performed. All different types of dysphotopsia where explained by pictures to the patients and a subjective questionaire was performed.

Results:

Under photopic conditions none of the both groups showed over all better results than the other. Under mesopic conditions, the subjective score in the comfort group (0=no symptoms, 100=severe) was 23.4 for glare, 20.8 for halos, and 18.6 for starbursts. For blurred distance resp. intermediate vision, it was 11.6 resp. 21.6, for doubling effects 8.8 and in the Femtis Comfort group 16,0 for glare, 9,00 for halos, and 11,09 for starbursts. For blurred distance resp. intermediate vision, it was 6,09 resp. 17,00, for doubling effects 2,27. Both groups showed comparable results regarding corrected and uncorrected visual acuity.

Conclusions:

Both groups showed good results regarding subjective grading of photopsia under photopic conditions. In comparisson the Femtis Comfort group shows better results in all types of photopsia under mesopic conditions. The cause of this difference may be the better centration, the missing overlap of the capsulotomy over the optic and the more anterior position of Femtis Comfort. The additional haptics which are enclaved in the capsulotomy does not seem to have a negative impact on the visual quality especially under mesopic conditions. .

Financial Disclosure:

research is funded, fully or partially, by a competing company, travel has been funded, fully or partially, by a competing company