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Ultrasound biomicroscopy of the anterior segment of the eyeball after implantation of a phakic IOL in patients with different refractive errors
Author(s) -
Malgin Konstantin
Publication year - 2019
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2019.5245
Subject(s) - ultrasound biomicroscopy , medicine , ophthalmology , iris (biosensor) , ciliary body , corneal endothelium , ultrasound , intraocular lens , lens (geology) , surgery , cornea , glaucoma , optics , radiology , physics , computer security , computer science , biometrics
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. Material and methods 32 patients (64 eyes) with moderate and high degree myopia (56 eyes) and hyperopia (8 eyes) without concomitant pathology were operated. The average age of the patients was 30 ± 5 years. Observation period: 1 day, 1 and 6 months 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 the Zinn’s zonules, the ciliary apparatus and the lens. Bilateral implantation of PhIOL was performed through 2.2 mm incision. Results On day 1, in 31 patients (96.8%): ACD decreased by 0.67 ± 0.1 mm, ACA was open, iris profile–straight, PhIOL position‐in ciliary sulcus, distance between PhIOL and the lens‐0.57 ± 0.2 mm, Zinn’s zonules were saved, ciliary body‐within normal limits, lens‐transparent; in 1 patient with high hyperopia (preoperative data: ACD‐open, ACA‐3.17 mm (OD), 3.23 mm (OS)) anterior chamber was shallow (1.05 mm), 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 31 patients, the state of anterior and posterior chambers’ structures remained satisfactory. Conclusion 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.