Posters

Ultrasound biomicroscopy of the anterior segment of the eyeball after implantation of a phakic IOL in patients with different refractive errors

Poster Details

First Author: K.Malgin RUSSIA

Co Author(s):    A. Chuprov   M. Korolkova                 

Abstract Details

Purpose:

to study the changes in of the anterior segment of the eyeball in the early and late postoperative periods after implantation of a phakic intraocular lens (PhIOL) in patients with different refractive errors using ultrasound biomicroscopy data.

Setting:

Orenburg branch of S. Fyodorov Eye Microsurgery Federal State Institution, Orenburg, Russia.

Methods:

32 patients (64eyes) with moderate and high degree myopia (56eyes) and hyperopia (8eyes) without concomitant pathology were operated. The average age of the patients was 30±5years. Observation period: 1day, 1month and 6months after surgery. Complementary to standard diagnostic examination, ultrasound biomicroscopy was performed in all patients before and after surgery. The following parameters were estimated: anterior chamber depth (ACD), anterior chamber angle (ACA); iris profile; the position of the PhIOL, the distance between the PhIOL and the lens, the state of Zinn’s zonules, the ciliary apparatus and the lens. Bilateral implantation of PhIOL was performed through 2.2mm incision.

Results:

On day 1, in 31patients (96.8%): ACD decreased by 0.67±0.1mm, ACA was open, iris profile–straight, PhIOL position-in ciliary sulcus, distance between PhIOL and the lens-0.57±0.2mm, Zinn’s zonules were saved, ciliary body-within normal limits, lens-transparent; in 1 patient with high hyperopia (preoperative data: ACD-open, ACA-3.17mm(OD), 3.23mm(OS)) anterior chamber was shallow (1.05mm), ACA was covered with iris, 1/3 of the iris root was in contact with corneal endothelium, PhIOL dislocated in the frontal plane, distance between PhIOL and the lens was uneven. After 1 and 6 months in 31patients, the state of anterior and posterior chambers’ structures remained satisfactory.

Conclusions:

Ultrasound biomicroscopy data of the anterior segment of the eyeball showed that implantation of PhIOL in patients with different refractive errors in early and late postoperative periods changes ACA, slightly decreases ACD, does not have contact with the anterior lens capsule.

Financial Disclosure:

None