The depth of field in a microscope can be calculated using the formula: Depth of Field = (2 * N * λ * (n + 1))

SH – Segment height. This is the distance from the top of the near vision portion of the lens to the bottom of the lens in millimeters.

Transition (or photochromic) lenses lighten or darken the tint in your glasses depending on the light level. Polarized glasses are also an option to prevent glare.

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was once known as the General Motors Institute or GMI. Today that relationship continues with GMTEP, the technical education program where GM supports ...

Meaning opticaleye

The abbreviation OD is frequently used in eye care and has two distinct meanings. When OD is part of your lens prescription, it is the abbreviation for the Latin term Ocular Dexter, which means “right eye.” When OD is written next to your eye doctor’s name, it is the professional abbreviation for Doctor of Optometry.

PAL – Progressive addition lenses. These lenses progress from distance to intermediate to near prescription without a distinct line.

Optical meaningin computer

Gli obiettivi macro vanno da 40 mm a 180 mm; le lunghezze focali più corte sono utilizzate solo per applicazioni speciali. L'obiettivo macro più popolare ha una ...

Contact lenses need extra measurements and have additional terms and abbreviations. Here is a brief summary of some terms you may see on your contact lens prescription:

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The contact lens prescription will also contain information on the power of the contact lens, the brand and type, and the expiration date.

Opticianmeaning

To make the most out of your visit with the optometrist, it is helpful to recognize and understand the abbreviations you will encounter. Armed with this knowledge, you will know when OD refers to your right eye and when it refers to your eye doctor’s professional degree!

2015710 — The focal length of a lens, expressed in millimeters, is the distance from the lens's optical center (or nodal point) to the image plane in the camera.

Eyeglasses prescriptions have unfamiliar abbreviations that can be confusing. Here is a brief summary of some of the terms you may come across on your eyeglasses prescription:

BF – Bifocal. A lens in which the distance prescription is placed on the top of the lens. The near prescription is placed on the bottom portion of the lens and marked by a line.

Blue(17)-+. 455nm(11); 470nm(16). Green(17)-+. 505nm(11); 520nm(3); 530nm(14) ... UltraSeal Spot Light. SL316. IP69K Certified. High Current Rated LEDs. Ideal for ...

Sources used at the time of publication are provided in the Notes and References section. These may include peer-reviewed scientific research, data from government health authorities, and other trusted sources of information.

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Rosenfield, Mark. Optometry: Science, techniques and clinical management. 2nd ed. Edinburgh: Butterworth- Heinemann. 2009.

Meaning opticalglasses

Anyone who has purchased GigE Vision compliant product and wish to do their own unique one-off integration or application development may use the standard ...

Understanding eye abbreviations when you visit your eye doctor will help you to make informed decisions about your eye care.

PD – Pupillary distance. This is the distance between the center of the pupils of the left and right eyes in millimeters.

Carlson, Nancy and Kurtz, Daniel. Clinical procedures for ocular examination. 4th ed. New York: McGraw-Hill Education. 2015.

Define FOV. means field of view;

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This article was written or reviewed by an All About Vision expert contributor, a partner medical reviewer or a member of our medical advisory board.

There are many abbreviations used in eye care, and sometimes it can be difficult to interpret what they all mean. Another abbreviation you may see on your prescription is OS. This is the abbreviation for Ocular Sinister and is Latin for “left eye.” In computer terminology, OS can also refer to an operating system, but this is not what it refers to in eye care.

Lenses are made with many designs and features to optimize vision. Some of the terminology used to describe these features include: