Posters

Comparative analysis of phacoemulsification cases complicated by zonular weakness

Poster Details

First Author: E.Danilenko RUSSIA

Co Author(s):    A. Kulikov   S. Churashov   D. Shamrey   V. Kondratov           

Abstract Details

Purpose:

To assess the iridocrystalline complex status in patients with cataract, complicated by lens subluxation before and after the surgical treatment.

Setting:

Ophthalmology department of Medical Military Academy named after S.M.Kirov

Methods:

The study enrolled 28 patients (29 eyes) with cataract, complicated by zonular weakness (8 women, 20 men, 74.13±8.48 years old). In all cases it was planned to provide phacoemulsification with IOL implantation and a capsular tension ring (CTR), if necessary. In all cases optical biometry, ultrasound biomicroscopy and applanation tonometry were provided. After 1, 3 and 6 months after the postoperatively autorefractometry, visometry and biometry were performed, ultrasound biomicroscopy and OCT of the anterior segment of the eye were used to determine range of IOL tilt and decentration.

Results:

Patients were divided into 2 groups. In I group (17 eyes) standard phacoemulsification was provided. In II group (11 eyes) CTR was implanted. 1 patient was excluded.  Preoperatively angle of lens tilt (3.62±0.34°,1.78±0.27°, p=0.00) and IOP were higher in group II. 6 months postoperatively UCVA was significantly higher in group II (0.59±0.09, 0.39±0.21, p=0.09), vertical angle of IOL tilt (0.28±0.35, 1.40±1.46°, p=0.1), total zonnular length (14.28±1.00 and 18.93±0.86mm, p=0.002) and the value of IOL decentration (0.80±0.17 and 0.20±0.22mm, p=0.04) were significantly less in group II.

Conclusions:

The angle of crystalline lens tilt according to ultrasound biomicroscopy could be considered as an important diagnostic criterion for the CTR implantation during phacoemulsification. CTR devices provided decrease of IOL tilt and decentration due to a more regular distribution of zonular tension that increases the UCVA rate postoperatively in complicated cases. OCT of the anterior segment of the eye and ultrasound biomicroscopy application after phacoemulsification gives a great capacity in IOL-capsular complex visualization and measurement.

Financial Disclosure:

None