Pars plana: The pars plana is part of the uvea, choroidea, one of the three layers that comprise the eye. As a part of the ciliary body, it is about 4 mm long, located near the point where the iris and sclera touch and is scalloped in appearance.Optic disc pit: An optic disc pit is a congenital excavation (or regional depression) of the optic nerve head resulting from a malformation during development of the eye. Optic pits are important because they are associated with posterior vitreous detachments (PVD) and even serous retinal detachments.Vitreous membrane: The vitreous membrane (or hyaloid membrane or vitreous cortex) is a layer of collagen separating the vitreous humour from the rest of the eye. At least two parts have been identified anatomically.Epiretinal membraneSilicone oil: A silicone oil is any liquid polymerized siloxane with organic side chains. The most important member is polydimethylsiloxane.EndophthalmitisScleral buckle: A scleral buckle is one of several ophthalmologic procedures that can be used to repair a retinal detachment. Retinal detachments are usually caused by retinal tears, and a scleral buckle can be used to close the retinal break.LogMAR chart: A LogMAR chart comprises rows of letters and is used by ophthalmologists and vision scientists to estimate visual acuity. This chart was developed at the National Vision Research Institute of Australia in 1976, and is designed to enable a more accurate estimate of acuity as compared to other charts (e.Ophthalmic Viscosurgical Device: Ophthalmic Viscosurgical Device (OVD) is viscoelastic solution used in eye surgery also referred to as viscoelastic agents. Their introduction has had a profound influence on the evolution of extracapsular and phacoemulsification surgery, and their use has decreased the incidence of corneal edema as aProliferative vitreoretinopathy: Proliferative vitreoretinopathy (PVR) is a disease that develops as a complication of rhegmatogenous retinal detachment. PVR occurs in about 8–10% of patients undergoing primary retinal detachment surgery and prevents the successful surgical repair of rhegmatogenous retinal detachment.Neuro-ophthalmology: Neuro-ophthalmology is an academically-oriented subspecialty that merges the fields of neurology and ophthalmology, often dealing with complex systemic diseases that have manifestations in the visual system. Neuro-ophthalmologists initially complete a residency in either neurology or ophthalmology, then do a fellowship in the complementary field.Purtscher's retinopathy: Purtscher's retinopathy is a disease where part of the eye (retina) is damaged. Usually associated with severe head injuries, it may also occur with other types of trauma, such as long bone fractures, or with several non-traumatic systemic diseases.Posterior vitreous detachment: A posterior vitreous detachment (PVD) is a condition of the eye in which the vitreous membrane separates from the retina.Diabetic retinopathy: ( )Cataract surgeryMacular edemaChen Zhongwei: Chen Zhongwei (Chinese:陈中伟, 1929–2004) was an expert of orthopedic surgery and microsurgery, one of the pioneers of the process of reattaching severed limbs.Retinal haemorrhageEye injuryCircular knittingLaser coagulation: Laser coagulation or laser photocoagulation surgery is used to treat a number of eye diseases and has become widely used in recent decades. During the procedure, a laser is used to finely cauterize ocular blood vessels to attempt to bring about various therapeutic benefits.Congenital cataractRetinal regeneration: Retinal regeneration deals with restoring retinal function to vertebrates so impaired.Central retinal vein occlusionIntraocular lens power calculation: The aim of an accurate intraocular lens power calculation is to provide an intraocular lens (IOL) that fits the specific needs and desires of the individual patient. The development of better instrumentation for measuring the eye's axial length (AL) and the use of more precise mathematical formulas to perform the appropriate calculations have significantly improved the accuracy with which the surgeon determines the IOL power.GlaucomaPerfluorodecalinIntraocular pressureCoherence theory: In physics, coherence theory is the study of optical effects arising from partially coherent light and radio sources. Partially coherent sources are sources where the coherence time or coherence length are limited by bandwidth, by thermal noise, or by other effect.TriamcinoloneOptimax: Optimax is a UK-based laser eye treatment specialist which has 38 locations nationwide. Optimax was established as one of the first private clinics to offer laser eye surgery.Saal Greenstein syndrome: Saal Greenstein syndrome is a very rare autosomal recessive genetic disorder characterized by stunted growth, short limbs, microcephaly, and an anomalous cleavage of the anterior chamber of the eye. The disorder is similar to Robinow syndrome except for anterior chamber anomalies and, in one case, hydrocephalus.Gholam A. Peyman: Gholam A. Peyman, MD recipient of National Medal of Technology and Innovation, the nation’s highest honor for technological achievement, bestowed by the President of the United States, President Obama, on America's leading innovators http://www.Howard Gimbel: Howard V. Gimbel, MD, MPH, FRCSC, AOE, FACS, CABES, (born January 17, 1934) is a Canadian ophthalmologist, university professor, senior editor, and amateur musician.Atomic force acoustic microscopy: Atomic Force Acoustic Microscopy (AFAM) is a type of scanning probe microscopy (SPM). It is a combination of acoustics and atomic force microscopy.Barbed suture: A barbed suture is a type of knotless surgical suture that has barbs on its surface. While suturing tissue, these barbs penetrate inside the tissue and lock them into place, eliminating the need for knots to tie the suture.Anterior segment mesenchymal dysgenesis: Anterior segment dysgenesis (ASD) is a failure of the normal development of the tissues of the anterior segment of the eye. It leads to anomalies in the structure of the mature anterior segment, associated with an increased risk of glaucoma and corneal opacity.PropoxycaineDiffuse unilateral subacute neuroretinitis: Diffuse unilateral subacute neuroretinitis (DUSN) is a rare condition that occurs in otherwise healthy, often young patients and is due to the presence of a subretinal nematode.CapsulotomyRetinal vasculitisFulminate