The term “P2” on a glasses prescription refers to the lens power needed for the second eye. Each eye has specific values like Sphere (SPH) and Cylinder (CYL). A plus sign (+) shows farsightedness, while a minus sign (-) indicates nearsightedness. Always consult an eye care professional for more details. Glasses prescriptions also include other … Read more
The term “P1 BD” in a glasses prescription means a prism correction of 1 prism diopter with the base down direction for the right eye. Prism diopters help align the eyes. Other common terms are BU (base up), BI (base in), and BO (base out). Knowing these terms aids in understanding vision correction better. Understanding … Read more
Your Pupillary Distance (PD) is the measurement in millimeters (mm) between the centers of your pupils. This measure is essential for proper lens fitting. A correct PD ensures clarity and comfort by aligning the lenses with your eyes. This alignment is vital for effective vision correction. Measuring your PD can be done at home or … Read more
NR on a glasses prescription stands for “Non-Reactive.” It shows that both pupils react normally to light. This term is important for assessing vision stability. The prescription also includes OD (Oculus Dexter for the right eye) and OS (Oculus Sinister for the left eye) to specify the lens power needed for clear sight. Common abbreviations … Read more
OD means “oculus dexter,” which is Latin for “right eye.” OS refers to “oculus sinister,” meaning “left eye.” These abbreviations are important for eye care professionals when writing your glasses prescription. They ensure that each eye receives the correct corrective lenses. OD stands for “oculus dexter,” a term derived from Latin. It refers to the … Read more
The term “mm” on a glasses prescription means millimeters. It indicates important frame measurements: 1) Lens width, 2) Bridge width, and 3) Temple length. Each measurement is crucial for achieving a proper fit and comfort when wearing the prescription frames. All values are shown in mm. For example, a common format displays measurements like 52-18-140, … Read more
A minus sign (−) on a glasses prescription means nearsightedness. This condition causes clear vision at close range and blurred vision at a distance. The minus sign is found in the sphere (SPH) column, indicating the lens power needed for visual correction and better vision clarity. A plus sign (₊) indicates farsightedness. For example, a … Read more
The sphere (SPH) measures lens power in prescriptions. A negative sign (-) indicates nearsightedness, and a positive sign (+) indicates farsightedness. The numbers show diopters, the unit for lens power. OD means the right eye, and OS means the left eye. ADD signifies extra power for reading glasses. The sphere number indicates the degree of … Read more
Non-prescription glasses, also known as fashion eyewear, do not correct vision. They act as stylish accessories and can include features like blue-light blocking technology. This technology helps reduce digital eye strain. These glasses are popular choices in current fashion trends. Another significant aspect is the affordability of non-prescription glasses. They are generally less expensive than … Read more
A plus sign (+) in an eyeglass prescription means farsightedness, indicating better distance vision. A minus sign (-) means nearsightedness, indicating better close vision. The numbers represent diopters, which measure lens power. OD refers to the right eye, while OS refers to the left eye. Next, the cylinder (CYL) measures astigmatism. This condition occurs when … Read more