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A patient with no pre-existing astigmatism is noted to have +4.00 diopters of astigmatism at 180 degrees 4 weeks following a straightforward suture free cataract surgery.

What does this indicate?

• 1. Loose suture placed at 180 degrees

• 1. Superiorly placed corneal incision

• 1. Superiorly placed scleral tunnel vision

• 1. Temporally placed corneal incision

• 1. Tight suture placed at 90 degrees

Following an intraoperative capsular tearing and inadequate sulcus support, what would be your preferred use of the one-piece acrylic intraocular lens (IOL) you had selected to implant?

• Placed in the ciliary sulcus if a tear in the capsulorhexis occurs

• Should be sutured to the sclera with nylon 10.0

• Placed in the iridocorneal angle

• Sutured to the posterior iris

• Placed one haptic in cilliary sulcus and another haptic in iridocorneal angle

When repairing a full-thickness corneal laceration, the surgeon should attempt to optimally reconstitute corneal curvature. Compared to the peripheral corneal sutures, central corneal suture placement should follow which preference?

• widely spaced and longer

• widely spaced and shorter

• closely spaced and longer

• closely spaced and shorter

• no suture in central corneal

A 26-year-old man had a cataract extraction with a scleral-sutured lOL 2 years ago, after he developed a traumatic cataract with marked zonular dehiscence. Six months ago, his eye was quiet and his best-corrected visual acuity was 20/30+2 with - 1.25 sphere. Yesterday he was hit in the pseudophakic eye. Today he complains of blurred vision, and a slit-lamp examination shows that the lens is rotated about its vertical axis. Assuming the lens is not displaced anteriorly or posteriorly, what would you would expect him to be?

• Less myopic, with with-the-rule astigmatism

• Less myopic, with against-the-rule astigmatism

• More myopic, with with-the-rule astigmatism

• More myopic, with against-the-rule astigmatism

Which of the following actions is not helpful in the treatment of posterior infusion (infusion misdirection) syndrome?

• Aspiration of fluid through the pars plana

• infusion of IV Manitol

• Raising of the infusion bottle

• gentle posterior pressure on the lens

• close the wound and send to retinal surgeon

During the performance of cataract surgery on a high myope, your view becomes limited due to numerous corneal striae caused by the very deep anterior chamber and the steep angle of your intraocular instruments. What maneuver would be the preferred option to improve your view?

• convert to small incision or ecce

• debride the surface epithelium that is obscuring your view

• raise the bottle height

• use a second instrument to lift the iris from the anterior capsule

• use sodium OVD in corneal surface

In determining the axial length using ultrasound biometry, which eye condition result in the slowest ultrasound velocity?

• aphakia

• silicone oil filled eye

• vitrectomized eye

• phakia

• pseudophakia

Following implantation of an intraocular lens (IOL), a 0.25-mm error in the IOL position would result in the greatest post- operative refractive error in what condition?

• IFIS

• Nanopthalmia

• High axial myopia

• prior retinal detachment

During hydrodissection of a routine case, the iris prolapses, the chamber shallows, and the eye becomes very firm. What is the most likely cause?

• zonular dialysis and vitreous prolapse

• expulsive choroidal haemorrhage

• cilliary body edema

• capsular block syndrome

• LIDRS

The preferred placement and composition of secondary intraocular lenses (IOL) may depend upon individual patient situation. For what situation is the lens choice most appropriate?

• Acrylic one-piece IOL in the ciliary sulcus

• Anterior-chamber IOL in an eye with iris atrophy

• Silicone IOL in an eye with active uveitis

• Angle support IOL in pigmentary glaucoma

• Acrylic IOL in an eye that may require silicone oil

  Please select an answer