Iridocorneal Angle Assessment After Laser Iridotomy With Swept-source Optical Coherence Tomography.
Aged
Anterior Chamber
/ diagnostic imaging
Cornea
/ diagnostic imaging
Female
Glaucoma, Angle-Closure
/ diagnostic imaging
Gonioscopy
Humans
Intraocular Pressure
Iridectomy
/ methods
Iris
/ diagnostic imaging
Laser Therapy
/ methods
Lasers, Solid-State
/ therapeutic use
Male
Middle Aged
Postoperative Period
Prospective Studies
Reproducibility of Results
Tomography, Optical Coherence
Journal
Journal of glaucoma
ISSN: 1536-481X
Titre abrégé: J Glaucoma
Pays: United States
ID NLM: 9300903
Informations de publication
Date de publication:
11 2020
11 2020
Historique:
pubmed:
6
9
2020
medline:
6
3
2021
entrez:
5
9
2020
Statut:
ppublish
Résumé
To investigate the reliability of anterior chamber angle (ACA) measurements in narrow angles and assess the effect of laser peripheral iridotomy (LPI) on these measurements using novel swept-source optical coherence tomography (SS-OCT) technology. In this prospective observational study, patients with gonioscopically narrow angles were enrolled and scheduled for prophylactic LPI. Twelve ACA sections were obtained in each eye using SS-OCT (ANTERION, Heidelberg Engineering, Germany) before and after Nd:YAG LPI. A built-in algorithm calculated ACA measurements after manual identification of the scleral spur and ACA recess. Eight ACA parameters were evaluated: ACA (ACA 500, ACA 750); scleral spur angle (SSA 500, SSA 750); angle opening distance (AOD 500, AOD 750); and trabecular iris space area (TISA 500, TISA 750). The effect of LPI was assessed for each parameter, both nasally and temporally. Ten patients (18 eyes) were enrolled (mean age, 61.8±13.6 y; 60.0% female individuals). On average, the ACA was wider nasally than temporally (P=0.004). LPI significantly widened the ACA (range, 26.7-29.4%; P<0.05). ACA 500 increased by 29.4% (P<0.001), ACA 750 by 29.2% (P=0.002), SSA 500 by 27.3% (P=0.003), SSA 750 by 28.1% (P=0.001), AOD 500 by 28.6% (P=0.009), AOD 750 by 28.6% (P=0.003), TISA 500 by 27.3% (P=0.004), and TISA 750 by 26.7% (P=0.200). SS-OCT ANTERION imaging can be used to reliably measure ACA before and after LPI. ACA, AOD, SSA, and TISA are all valid ACA measurement methods.
Identifiants
pubmed: 32890108
doi: 10.1097/IJG.0000000000001654
pii: 00061198-202011000-00005
doi:
Banques de données
ClinicalTrials.gov
['NCT04381611']
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1030-1035Références
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