title: PRESBYOPIA OPTOMETRY METHOD BASED ON DIOPTER REGULATION AND CHARGE COUPLE DEVICE IMAGING TECHNOLOGY.
abstract: With the development of photoelectric technology and single-chip microcomputer technology, objective optometry, also known as automatic optometry, is becoming precise. This paper proposed a presbyopia optometry method based on diopter regulation and Charge Couple Device (CCD) imaging technology and, in the meantime, designed a light path that could measure the system. This method projects a test figure to the eye ground and then the reflected image from the eye ground is detected by CCD. The image is then automatically identified by computer and the far point and near point diopters are determined to calculate lens parameter. This is a fully automatic objective optometry method which eliminates subjective factors of the tested subject. Furthermore, it can acquire the lens parameter of presbyopia accurately and quickly and can be used to measure the lens parameter of hyperopia, myopia and astigmatism.
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: Q
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: X X
authors.initials: XX
authors.lastname: Wu
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: J
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: R F
authors.initials: RF
authors.lastname: Liu
authors.affiliation: Department of Ophthalmology, the Second Hospital of Dalian Medical University, Dalian, Liaoning Province, China.
authors.forename: J
authors.initials: J
authors.lastname: Gao
mesh_terms: D003952:Diagnostic Imaging / Q000295:instrumentation / Q000379:methods; D005123:Eye / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D008838:Microcomputers; D009907:Optometry / Q000295:instrumentation / Q000379:methods; D011305:Presbyopia / Q000175:diagnosis / Q000503:physiopathology