Measurement of spherical and cylindrical power in ophthalmic lenses based in the change of lateral amplification.
Rev Sci Instrum
; 86(2): 023103, 2015 Feb.
Article
em En
| MEDLINE
| ID: mdl-25725819
ABSTRACT
In this article, we present a new technique to measure spherical and cylindrical power in ophthalmic lenses. This method is based in the change of lateral amplification produced by an optical system when introducing an ophthalmic lens. Ophthalmic lens power is calculated by considering the change in image size from a reference object and its own image seen through the ophthalmic lens. Mathematical analysis is presented along with the experimental setup and the obtained results. Several algorithms were applied to the obtained results as a method to compensate the error in order to fit into ISO 8598 specifications.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óculos
/
Fenômenos Ópticos
Idioma:
En
Revista:
Rev Sci Instrum
Ano de publicação:
2015
Tipo de documento:
Article