Association Between Angle Alpha And Visual Outcomes Following Implantation Of The Acrysof™ Iq Vivity™ Extended Depth Of Focus Intraocular Lens

To determine visual acuity and self-reported visual disturbances in eyes with normal angle alpha (<0.44mm) and those with large angle alpha (>/=0.44mm).

Single-site, private ophthalmology clinic. Surgery performed by a single surgeon

Study design: Ambispective study

Population: Adults (>50 yrs) with age-related cataract having bilateral cataract extraction with implantation of the AcrySof™ IQ Vivity™ IOL (Extended or Toric Extended model). We will recruit 25 subjects (50 eyes) with normal angle alpha and 25 subjects with large angle alpha.

Exclusion criteria: Ocular pathology, previous refractive surgery, intra-op or post-op complications

First visit

- Pentacam, IOL Master 700, macular OCT and RNFL

- Categorization of Angle alpha (mm) measured on Sirius corneal topographer:

< 0.44 (normal)

>/= 0.44 (large)

Lens selection/surgery:

- Spherical and toric IOL power calculation using Barrett Universal II formula and Barrett Toric Calculator

- Plano target for dominant eye

- Mini-monovision target for non-dominant eye (-0.5 +/- 0.25)

Routine Post-op visits:

- Day 1, Week 1, Month 1 and 3 months.

- Assessments include: vision, IOP and slit-lamp examination.

- Those with posterior capsule opacity will be treated with YAG laser capsulotomy at three months.

Six-months:

- Refraction

- Vision (monocular and binocular): Tested at near = 40cm, intermediate = 66cm and distance = 6 meters.

Study results are pending.

Conclusions: Will be made at the time of the meeting.