Dysphotopsia profile of the Rayner 600s intraocular lens over the 6 months post implantation

Session Details

Session Title: Pseudophakic IOLs: Monofocal

Session Date/Time: Monday 09/10/2017 | 16:30-18:00

Paper Time: 17:17

Venue: Room 2.1

First Author: : J.Wolffsohn UK

Co Author(s): :    G. Bhogal-Bhamra   S. Kolli                 

Abstract Details

Purpose:

Glare is a known side effect of intraocular lens (IOL) implantation, affected principally by IOL material, decentration, tilt and optics, although it is reported subjectively to decrease in impact with time. However, little objective data has been published on changes over time and how this relates to subjective reports.

Setting:

National Health Service Ophthalmology Department, Queen Elizabeth Hospital, Birmingham, UK

Methods:

Sixteen patients (aged 71.8±7.4 years) with healthy eyes were implanted bilaterally with the 600s (Rayner, Worthing, UK). Each reported their dysphotopsia symptoms subjectively using the validated forced choice photographic questionnaire of photic phenomena questionnaire, and halo size to a bright light in a dark environment was quantified objectively in 8 orientations using the Aston Halometer. Assessment was performed binocularly pre-operatively and at 1, 2, 3 and 4 weeks after IOL implantation.

Results:

Subjective dysphotopsia was greater before surgery (F=14.966, p<0.001), but rarely reported after surgery (F=0.261, p=0.852), with no significant difference with type (F=1.918, p=0.132) or interaction between then (F=2.134, p=0.053). Objectively measured halo size changed was also greater before surgery (F=56.277, p<0.001), but continued to decrease with time after surgery up to 3 weeks (F=4.973, p=0.005), differed across orientations (F=3.496, p=0.014), however there was no interaction between these (F=0.785, p=0.778). Overall subjective dysphotopsia was correlated with objective halometry (r=-0.509, p=0.044), blur not individual subscales of halo and star (r=0.146, p=0.590) and night glare (r=-0.345, p=0.191).

Conclusions:

Subjective dysphotopsia and objective halos caused by cataracts are greatly reduced by implantation of the 600s IOL after cataract removal causing few perceivable symptoms. However, objective measures are able to quantify a further reduction in light scatter up to 3 weeks post IOL implantation, presumably as part of the healing process.

Financial Disclosure:

research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented