Shortcuts Used for Prescription

The ± symbol is generally used to express tolerance or variability in measurements,
but here in chashmewala.com, ± represents either plus or minus.

Here's a list of common abbreviations and shortcuts used in optometry:

1. Sph - Spherical (refers to the spherical part of the lens prescription)
2. Cyl - Cylinder (refers to the cylindrical part of the lens prescription, indicating astigmatism)
3. Ax - Axis (orientation of astigmatism in degrees)
4. DV - Distance Vision
5. NV - Near Vision
6. Add - Addition (additional magnifying power for bifocals or progressive lenses)
7. PD - Pupillary Distance (distance between the centers of the pupils)
8. IPD - Interpupillary Distance (another term for PD)
9. NPD - Near Pupillary Distance (PD measured for reading or near tasks)
10. D - Diopter (unit of measurement for the optical power of lenses)
11. VA - Visual Acuity (clarity or sharpness of vision)
12. Rx - Prescription
13. CL - Contact Lens
14. BC - Base Curve (curvature of the contact lens or eyeglass lens)
15. VF - Visual Field
16. OS - Oculus Sinister (left eye)
17. OD - Oculus Dexter (right eye)
18. OU - Oculus Uterque (both eyes)
19. IOP - Intraocular Pressure (pressure inside the eye)
20. IOL - Intraocular Lense (presence of artificial lense implanted in the eye)

These abbreviations are commonly used in prescriptions and clinical notes to describe various aspects of eye health and vision correction.