VA: Visual acuity; you may also see DVA and NVA which stand for Distance Vision Acuity and Near Vision Acuity, respectively. BC & DIA: Short for “Base Curve” and “Diameter,” respectively. You'll see these on contact lens prescriptions.17 may 2020
What is DS in cylinder for glasses?
DS is short for “Diopter Sphere” and should only be seen in your CYL column. It means there is no CYL correction needed, or in other words, no astigmatism correction.17 may 2020
What does SVD mean on glasses prescription?
Your eyeglass prescription may contain other terms and abbreviations. These include: SVD – Single Vision Distance, or glasses for distance only. SVN – Single Vision Near, or glasses for reading only. PD – Pupillary Distance, or the distance between the centers of the two pupils between the eyes.
What is normal visual acuity for reading?
Vision of 6/12 corresponds to lower performance, while vision of 6/3 to better performance. Normal individuals have an acuity of 6/4 or better (depending on age and other factors).
What is a bad visual acuity?
20/30 to 20/60, this is considered mild vision loss, or near-normal vision. 20/70 to 20/160, this is considered moderate visual impairment, or moderate low vision. 20/200 or worse, this is considered severe visual impairment, or severe low vision.
What does a 10/40 visual acuity mean?
1/4
What does DCC mean in vision?
The Deleted in Colorectal Carcinoma (Dcc) receptor plays a critical role in optic nerve development. Whilst Dcc is expressed postnatally in the eye, its function remains unknown as Dcc knockouts die at birth.25 feb 2020
What are the medical abbreviations for eyes?
Abbreviation Term
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Oph Ophthalmoscopy
OS oculus sinister (left eye)
OU oculus uterque (both eyes)
PD Pupillary distance