To read your eyeglass prescription, look for the sphere, cylinder, and axis. Sphere shows lens power in diopters (D) for nearsightedness (myopia) or farsightedness (hyperopia). The prescription lists data for the right eye (OD) first, followed by the left eye (OS). PD (pupillary distance) measures the space between your pupils and may be listed separately. … Read more
To read a glasses prescription, find OD for the right eye and OS for the left. Diopters show lens power. A minus (-) indicates nearsightedness, while a plus (+) indicates farsightedness. Pupil distance (PD) measures the space between your pupils. Each number outlines the sphere and cylinder needed for clear vision. Next, the cylinder (CYL) … Read more
To read a glasses prescription, focus on key elements. Lens power is measured in diopters (D) and appears in the “Sphere” section. A minus (-) shows nearsightedness. The prescription includes Sphere (S), Cylinder (C), and Axis values. Right eye (OD) data comes before left eye (OS). Pupillary Distance (PD) indicates the distance between pupils. Typically, … Read more
To read a glasses prescription, look for the sphere, cylinder, and axis values. The sphere shows lens power in diopters (D). Negative values represent nearsightedness; positive values indicate farsightedness. The right eye (OD) values are listed first, followed by the left eye (OS). Pupillary distance (PD) may also be included. The prescription includes numbers that … Read more
To read a glass thermometer, hold it at eye level with the scale facing you. Look for the black vertical lines that show temperature degrees. Most thermometers feature two scales: Fahrenheit and Celsius. Note the temperature where the mercury or colored liquid touches the scale to get an accurate body temperature reading. After the time … Read more
To read a glasses prescription, start with the sphere value in diopters (D). A negative number shows nearsightedness. Check the cylinder and axis for astigmatism. The prescription contains details for both eyes: OD is for the right eye and OS for the left eye. Look for pupillary distance (PD) as well, which might be single … Read more
To read a glass thermometer, check the long lines for whole degrees and the small lines for 0.2 degrees. Align the liquid level with the markings. For normal adult body temperature, it should read 98.6°F. Use this scale to measure temperature accurately in different situations. Next, identify the liquid inside the thermometer, typically mercury or … Read more
A storm glass barometer shows weather changes through water levels in the spout. A low water level means high pressure and fair weather. A high water level indicates low pressure and possible precipitation. During severe weather or major storms, water may overflow from the spout. Next, note the markings on the barometer. These indicate specific … Read more
To read a glass syringe accurately, identify the plunger and the calibration lines on the barrel. Hold the syringe at eye level for precise measurement. Understanding its components is vital for nursing applications and laboratory uses. Practice proper technique for reliable results in various situations. Understanding how to read a glass syringe enhances its usefulness, … Read more
To read a glass pipette, hold it upright and level your eyes with the liquid level. Look at the meniscus, which is the curve of the liquid. Read the volume at the bottom of the meniscus. Make sure the pipette is calibrated “to deliver” (TD) for accurate volume measurement, typically between 1-25 ml. Effective pipetting … Read more