[Phacoemulsification in prevention of acute angle-closure glaucoma attack].

UNLABELLED

Analysis of the effectiveness of preventative phacoemulsification (PE) in anatomically short eyes with an increased risk of an acute glaucoma attack in thickened lens can help in choosing the optimal management tactics for these patients.

PURPOSE

To study the changes in morphometric parameters of the anterior segment of anatomically short eyes with an increased risk of acute glaucoma attack before and after preventative PE.

MATERIAL AND METHODS

The study included 70 patients (70 eyes) with a high risk of acute glaucoma attack in short anatomical axial length and thickened lens, with posterior and middle positions of the ciliary body. They were divided into 2 groups: the main group consisted of 45 patients who agreed to undergo PE; the comparison group consisted of 25 patients who refused to undergo PE due to good visual functions and no complaints about vision. B-mode ultrasound examination of the anterior segment of the eye was used to evaluate the cross-sectional surface area of the lens (CSAL) and the cross-sectional surface area of the anterior chamber (CSAAC).

RESULTS

In the main group, on day 2-3 after PE the anterior chamber depth increased in all eyes, the CSAAC index increased, the anterior chamber angle (ACA) widened to Schaffer grade to II-III. After 1-3 years and 4-5 years, the anterior chamber depth, the CSAAC index and the width of the ACA remained stable. In the comparison group, after 1-3 years the anterior chamber depth and the CSAAC index significantly decreased, the ACA narrowed, and the intraocular pressure increased; after 4-5 years, there was a progressive increase in the CSAL index, the ACA was completely closed (0°).

CONCLUSION

In all cases of timely performed preventative PE, already on days 2-3 after surgery there was a statistically significant improvement in the main morphometric parameters of the eye, which remained stable for 4-5 years.