Comparison of different pupil dilatation methods for phacoemulsification in eyes with a small pupil.
BMC Ophthalmol
; 22(1): 173, 2022 Apr 18.
Article
em En
| MEDLINE
| ID: mdl-35436870
ABSTRACT
PURPOSE:
To compare 6 methods for intraoperative pupil dilatation in eyes with insufficient pupil size during phacoemulsification.METHODS:
This was a prospective case-control study. 99 microcoria cataract patients (120 eyes) were collected and were divided into 6 groups(20 eyes each group), and their pupils were dilated by bimanual stretching pupil (group I), pupil radial cut open(group II), mechanical pupil dilatation with iris-retractor hooks (group III), OASIS iris expander (group IV), and Malyguin-ring (Microsurgical company, America) (group V), B-HEX Pupil Expander (Med Invent Devics, India)(group VI),respectively. 3.0 mm clear corneal incision were used in phacoemulsification. All cases were followed up at 1 week and 1, 3, 6 months after the surgery. The best corrected visual acuity (BCVA), intraocular pressure(IOP), corneal endothelium cell density(ECD), pupil diameter(PD) of before and after surgery were compared.RESULTS:
One same doctor finished all cataract surgeries successfully. The eyes' condition before surgery and at 6 months after surgery were compared. There were no significant statistical differences for the conditions of the eyes before surgery among six groups. The ECDs were better at 6 months postoperatively in group III and V, median values 2114/mm2, 1961/mm2. PD was largest in group II (median value 5.5 mm), which was significantly larger than other groups (Padjusted < 0.05).CONCLUSIONS:
All 6 methods used in this study were effective for the mechanical dilatation of small pupils and didn't affect the postoperative visual acuity and intraocular pressure in microcoria cataract phacoemulsification. Iris-retractor hooks and the Malyugin Ring can reduce intraoperative corneal endothelium cell loss. Postoperative PD is larger when the iris was cut open radially.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Catarata
/
Midríase
/
Distúrbios Pupilares
/
Facoemulsificação
/
Doenças da Íris
Tipo de estudo:
Observational_studies
Limite:
Humans
Idioma:
En
Revista:
BMC Ophthalmol
Ano de publicação:
2022
Tipo de documento:
Article