BACKGROUND Ocular biometric parameters can be influenced by race, ethnicity, and genetics; their differences across different populations can probably explain differences in refractive errors in these populations. The aim of this study is to determine the normal range of axial length, anterior chamber depth, lens thickness, and vitreous chamber depth in the population of Shahroud in the north o...

PURPOSE The confounding factors of retinal transmission function are unclear. This study aimed to investigate retinal transmission function by evaluating the morphologic features of the retina and choroid in different section layers using multispectral imaging (MSI) in healthy eyes. METHODS Multispectral imaging was performed on 122 healthy eyes. In each subject, 11 images at 550 to 850 nm we...

The shape of anatomic objects often depends in complex ways on the shapes and locations of neighboring objects. Shape parameter networks provide an approach for representing shape dependencies and producing multi-object models that share consistent boundary definitions. This paper provides an overview of the modeling framework provided by shape parameter networks, and demonstrates their use thr...

PURPOSE To evaluate the clinical efficacy and complications of intraocular lens (IOL) exchange. METHODS A review of medical records was performed for 52 eyes that had undergone an IOL exchange due to IOL opacification. Surgical complications and their incidences were analyzed. The mean best corrected visual acuity (BCVA) after the IOL exchange was compared with the mean pre-exchange BCVA and ...

PURPOSE To evaluate the clinical characteristics and outcomes of cataract surgery in highly myopic Korean subjects. METHODS We retrospectively reviewed the medical records of 694 eyes of 694 patients who underwent cataract surgery. The case group included 347 eyes of 347 patients whose axial lengths (AXL) were ≥26.00 mm, and the control group included 347 eyes of 347 patients with AXL between...

PURPOSE The purpose of this study was to test the response of the mouse eye to two methods for the induction of experimental myopia. METHODS Growth patterns of eyes were determined by axial length measurements from birth to adult in eyes of both sexes of normal mice examined on post-natal day 1 to 6 months and at 1 year. For the induction of experimental myopia, Balb/cJ mice were prepared wit...

PURPOSE To investigate relationships between age, weight, refractive error, and morphologic changes in children's eyes by computerized tomography (CT). METHODS Of the 772 eyes of 386 patients under the age of 20 years, who visited our Department of Ophthalmology between January 2005 to August 2006 and underwent CT of the orbit, 406 eyes of 354 patients with clear CT images and normal eyeball ...

BACKGROUND To determine the relationship between central corneal thickness (CCT), refractive error, corneal curvature, anterior chamber depth and axial length in normal Taiwanese Chinese adults. METHODS Five hundred normal Taiwanese Chinese patients aged 40-80 years were recruited for the study. Measurement procedures included CCT, refractive error, corneal curvature, anterior chamber depth a...

AIMS To evaluate the ocular axial length as a risk factor for development of central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO). METHODS Ocular axial lengths were measured, by A-scan ultrasonography, in 17 patients with CRVO and 41 patients with BRVO and compared with those of contralateral unaffected eyes and 66 age matched controls. RESULTS In 17 patients with ...

Eighteen families in which both parents had refractions within the range of + 4 0 D to 4 0 D and axial lengths seen in emmetropia (22.3-26-0 mm) showed coefficients of correlation of the order 0 5 indicative of polygenic inheritance. Such coefficients were seen for axial length (0.407) and for the cornea (0-487), but not for the lens (which is known to be yoked to the axial length). No such coe...