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Tianjin, China

Wang Y.,Tianjin Eye Institute
Chinese Journal of Ophthalmology | Year: 2016

In recent years, new technologies and ideas of modern ophthalmology and optometry have emerged. Based on the wavefront technology and its derivatives, the traditional concepts of refractive errors and vision correction have been redefined and supplemented. Human optical quality can be evaluated effectively and objectively. Moreover, the studies about the wavefront vision correction have shown preferable vision correction results. Application of these modern methods of wavefront refraction and correction offers important opportunities for better optical quality and visual performance in corneal refractive surgery. It also provides a foundation for creating novel clinical diagnosis and treatment options in vision correction. Copyright © 2016 by the Chinese Medical Association. Source


Zhang W.,Tianjin Eye Institute
Chinese Journal of Ophthalmology | Year: 2015

Strabismus is a deviation of the visual axes relative to each other and is a very common eye disease. Strabismus is not only a cosmetic disease but more importantly damage to visual acuity, binocular vision and stereopsis. There are many different strabismus forms. It is very difficult to accommodate all the different clinical forms with only one classification. Different author has different classification because of different concerns. In order to avoid clinical confusion and provide references for clinicians, literatures from mainstream domestic and international journals and new revised classification by Chinese Association for Strabismus and Pediatric Ophthalmology were reviewed in this paper. Copyright © 2015 by the Chinese Medical Association. Source


Wei S.,Tianjin Medical University | Wei S.,Tianjin Key Laboratory of Ophthalmology and Visual Science | Song H.,Tianjin Medical University | Song H.,Tianjin Key Laboratory of Ophthalmology and Visual Science | And 3 more authors.
Cornea | Year: 2014

PURPOSE: The aim of this study was to investigate the distribution of higher-order aberrations (HOAs) of the anterior cornea of eyes with cataract in a senior Chinese population and their correlations with age. METHODS: Four hundred ten Chinese patients (male/female: 196/214; age: 67.9 ± 10.0 years) with cataract were categorized into 5 groups according to their age. The HOAs in the central 6-mm zone of the cornea were measured with an iTrace wavefront analyzer. The correlations between age and total HOA, coma aberration, trefoil aberration, and spherical aberration were assessed using Spearman analysis. The differences in total HOA, coma aberration, trefoil aberration, spherical aberration among various age groups were analyzed using the Kruskal-Wallis H test. RESULTS: The corneal HOA exhibited a nonnormal distribution. A weak correlation was found between age and total HOA, coma aberration (Z3±3), trefoil aberration (Z 3±1) (P < 0.001 for all). No correlation was found between age and spherical aberration (Z40). Differences in the root mean square of the total HOA, Z3 ±1, and Z3±3 were found among various age groups (P < 0.05). No difference was found in the root mean square of Z40, spherical diopter, corneal curvature, corneal astigmatism, corneal effective refractive power, corneal asphericity Q value and corneal central power across the groups. CONCLUSIONS: The distribution of anterior corneal HOAs of eyes with cataract in a senior Chinese population is of the nonnormal type. The total HOA, Z3±1, and Z3±3 are correlated to age, unlike Z4 of the anterior cornea. Copyright © 2014 by Lippincott Williams & Wilkins. Source


Liu Y.,Tianjin Eye Institute | Wang Y.,Tianjin Eye Institute
Chinese Journal of Ophthalmology | Year: 2016

As an influencing factor of visual quality, straylight is a functional measure of the effect of light scatter across the retina. The phenomenon depends on the refractive index and the turbidity of the ocular media. This light scattering reduces the contrast of the image projected on the retina, and thus decreases the quality of vision. The review focuses on the concept and classification of straylight, and the relationship between straylight and visual quality. Copyright © 2016 by the Chinese Medical Association. Source


Guo Y.,Tianjin Eye Institute | Zhao K.,Tianjin Eye Institute
Chinese Journal of Ophthalmology | Year: 2015

Many forms of synaptic plasticity require NMDA-type glutamate receptors (NMDAR). These tetrameric receptors consist of two obligatory NR1 subunits and two regulatory subunits, usually a combination of NR2A and NR2B. In the neonatal visual cortex NR2B-containing NMDAR predominate, after thatvisual experience facilitates a developmental switch in which NR2A levels increase relative to NR2B. In this review, it puts emphasis on the role and the regulation of this shift as well as the effect on synaptic plasticity. Copyright © 2015 by the Chinese Medical Association. Source

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