Modulation transfer function of implantable phakic intraocular contact lens (IPCL) for myopia and presbyopia.
Graefes Arch Clin Exp Ophthalmol
; 262(10): 3201-3206, 2024 Oct.
Article
em En
| MEDLINE
| ID: mdl-38842594
ABSTRACT
PURPOSE:
This study aimed to assess the optical quality of myopic and presbyopic IPCLs with different additional powers, and to investigate the effects of pupil size on the optical quality of these IPCLs using an in-vitro modulation transfer function (MTF) measurement system.METHODS:
Linear scatter functions (LSFs) were recorded using the OPAL Vector system and an eye phantom consisting of wet cells filled with a balanced salt solution. A myopic IPCL or a presbyopic IPCL was placed in the posterior chamber of this model. The MTF was calculated from the LSF using the fast Fourier transform techniques. The effective apertures were set at 2.0 to 5.0 mm in 1.0 mm steps.RESULTS:
The in-focus MTF values of the myopic IPCL and presbyopic IPCL with additional powers of + 2.0 and + 4.0 diopters at 100 cycles/mm for an effective aperture of 3.0 mm were 43%, 27%, and 24%, respectively. The in-focus MTF value of both myopic and presbyopic IPCLs was the highest when the effective aperture was set at 3.0 mm, and it gradually worsened when the effective aperture became larger than 3.0 mm at 20, 60, and 100 cycles/mm.CONCLUSIONS:
Both myopic and presbyopic IPCLs provided excellent MTF values, but the additional power profile can deteriorate optical performance in presbyopic IPCL-implanted eyes, even with a low additional power. Pupil size can influence visual quality in IPCL-implanted eyes for both myopia and presbyopia.Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Presbiopia
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Refração Ocular
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Lentes Intraoculares Fácicas
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Miopia
Limite:
Humans
Idioma:
En
Revista:
Graefe's archive for clinical and experimental ophthalmology
/
Graefes Arch Clin Exp Ophthalmol
/
Graefes arch. clin. exp. ophthalmol
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Japão