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The 90D is the classic all-around slit lamp lens with good field of view, comfortable magnification and excellent ability to examine through small or undilated pupils. In comparison, the Digital Wide Field has a wider field of view, the magnification is similar to the 90D, and it still has excellent small pupil capability.
了解详细信息：The 90D is the classic all-around slit lamp lens with good field of view, comfortable magnification and excellent ability to examine through small or undilated pupils. In comparison, the Digital Wide Field has a wider field of view, the magnification is similar to the 90D, and it still has excellent small pupil capability.
eyeguru.org/blog/volk-lens-review/The 28D is a somewhat smaller lens with a shorter working distance, so it may be helpful to you. What you lose is magnification (3.13 for the 20D vs 2.27 for the 28D), but you actually gain field of view (46 deg vs 53 deg). The 2.2 is a nice compromise, but it's as large as the 20D.
forums.studentdoctor.net/threads/which-volk-lens-t…In his post, David reviews several of our slit lamp lenses, BIO lenses, and gonio lenses, comparing the magnification, field of view, application, and ease of use for each type of lens, and recommending his preferred choices.
blog.volk.com/learning-center-blogs/volk-opthalmic …Both the 90D and Digital Wide Field (Volk 90D, Volk Digital Wide Field and Ocular Maxfield 90D) are commonly regarded as general-purpose lenses for slit lamp examination. They offer a good field of view, satisfactory image magnification and the ability to examine small pupils.
eyewiki.org/Ophthalmic_Exam_LensesDespite their meretricious names and proliferating numbers, funduscopes are only single-element entities whose two most basic properties — magnification and field of view — are dictated by their power and their diameter; if these data are not clearly indicated by the company, the informed clinician will extrapolate them with knowledge of ...
eyesoneyecare.com/resources/lens-choices-in-clini…Volk Ophthalmic Lens Review - EyeGuru
The 90D is the classic all-around slit lamp lens with good field of view, comfortable magnification and excellent ability to examine through small or undilated pupils. In comparison, the Digital Wide Field has a wider field of view, the magnification is similar to the 90D, and it still has excellent small pupil capability. 展开
The Volk Classic series lenses were designed around the 1970’s. Slit lamp lenses had powers of 60D, 78D or 90D, while indirect lenses ranged from 15D to 40D (most commonly used are the 20D and 28D). The Super series came about in the mid 90’s. They used … 展开
Slit lamp lenses are high plus power condensing lenses which create in an inverted view of the fundus. These lenses are differentiated by their dioptric power and their aspheric shape, resulting in different fields of view, magnification, working distance, … 展开
- 20D and Pan Retinal 2.2
- These two lenses are great general purpose binocular indirect lenses. Betwe…
- Digital Clear Field and 28D
- The 28D lens is a classic lens with many strengths. It is comfortable … 展开
- Digital Wide Field and 90D
- I’ve used the Digital Wide Field and classic 90D lenses for a long time. The 90D is t…
- 78D, Super 66, and Digital 1.0x
- These higher magnification slit lamp lenses are, in my opinion, … 展开
Which Volk lens to get? | Student Doctor Network
2003年12月4日 · The 28D is a somewhat smaller lens with a shorter working distance, so it may be helpful to you. What you lose is magnification (3.13 for the 20D vs 2.27 for the 28D), but …
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Anki Occlusion Question 2017年12月19日 at what testicular volume would you do a varicocelectomy? 2017年8月31日 what happens at focal point of diverging lens 2008年8月5日 UK or UofL? 2002年1月26日 Ophthalmic Exam Lenses - EyeWiki
Both the 90D and Digital Wide Field (Volk 90D, Volk Digital Wide Field and Ocular Maxfield 90D) are commonly regarded as general-purpose lenses for slit lamp examination. They offer a …
“Volk Ophthalmic Lens Review” featured on EyeGuru.org
2024年11月4日 · In his post, David reviews several of our slit lamp lenses, BIO lenses, and gonio lenses, comparing the magnification, field of view, application, and ease of use for each type …
A Comprehensive Guide to Lens Choices in Clinical Funduscopy
2016年2月22日 · Despite their meretricious names and proliferating numbers, funduscopes are only single-element entities whose two most basic properties — magnification and field of view …
• Widest field of view of any BIO lens delivers high resolution views through a small pupil • Can be used at a slit lamp to provide ultra high magnification views of the posterior pole Key benefits :
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Auxiliary Lenses for Slit-Lamp Examination of the Retina
2023年8月25日 · Volk area centralis lens is an indirect contact lens that provides a good field of view with high magnification. The field of view is 70/84 (static/dynamic) degrees. Image …
The optics of fundus examination - ScienceDirect
1992年5月1日 · Expressed alternatively, the field of view in indirect ophthalmoscopy is gov- erned by the relationship: lens diameter/focal length. If the patient is emmetropic, light rays leav- ing …
2D View Field of View Product code: V60C 78D Primary Application – General Diagnosis and Laser Treatment • Ideal balance of magnification and field of view • Optimally designed for use …
working distances for different powers of Volk ophthalmoscopy lenses approxi-mate optimal matching between the various pupils of the eye-Volk lens-slit-lamp biomicroscope system. …
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