Multifocal Contact Lenses vs Bifocal Spectacles for Congenital Cataracts

the Comparison of Multifocal Contact Lenses and Bifocal Spectacles for Congenital Cataracts

In this study, the investigators provide participants who had congenital cataract the multifocal contact lenses and bifocal spectacles in the purpose of seeking out a better way to make a definite diagnosis with high efficiency and accuracy, and report a prospective, randomized controlled study aiming at comparison of multifocal contact lenses and bifocal spectacles.

Children diagnosed as cataract without treatment were enrolled to a prospective, randomized controlled study. Patients were assigned to four groups: participants in group A wearing multifocal contact lenses a week and then bifocal spectacles a week;in Group B, the participants wearing bifocal spectacles a week and then multifocal contact lenses;in Group C, the participants wearing multifocal contact lenses four a year;in Group D, the participants wearing bifocal spectacles four a year. Investigators compare the acuity, refraction, contrast sensitivity and the results of questionnaire between A and B , C and D groups.

Inclusion Criteria:

• diagnosed as binocular cataract
• after the surgery of binocular intraocular lens implantation more than one month

Exclusion Criteria:

• diagnosed as xerophthalmus
• diagnosed as other eye diseases or systemic diseases