Volk Optical products

Perhaps the most recognized lens around the world, the Volk 20D is the lens that started the legacy of double aspheric lens design for BIO and is still considered as a gold standard. The contributing factors for this are the perfect balance of field of view and magnification of the 20D. The working distance of 50 mm also makes lens manipulation a comfortable experience for the examiner. This lens is perfect for general diagnosis of patients with a 3x magnification and field of view that allows visualization up to the mid peripheral region. The dynamic examination with the appropriate eye movements by the patients allows viewing of the peripheral retina as well as detailed examination by BIO in the primary position provides a comprehensive estimate of retinal health. Thus, this lens is a great choice both as a first line of diagnosis as well as a high level central retinal examination.

With a wide field of view, this lens offers visualization past the mid peripheral region up to the equator and the peripheral retina upon dynamic examination. The optical design and power of this lens makes it a great choice when working with patients that have a small pupil or do not respond well to dilation such as infants or older populations. The small profile as well as a closer working distance make enable the doctor to easily manipulate the lens for a quick examination, especially with patients who may not remain still for a long time. Most widely used for examination and assessment of Retinopathy of Prematurity (ROP) and peripheral retinal defects such as tears and detachments.