Frequently Asked Questions about Prescott’s Surgical Microscopes service, refurbishing, parts and products from Zeiss, Leica and other top brands.


What are the major categories of surgical microscopes?

Surgical microscopes are typically categorized by discipline. Most common are ENT, Ophthalmology, Neuro/Spine, Hand/Plastic, Endodontic


What are the primary components of a surgical microscope?

Surgical microscopes are comprised 3 key components. A suspension system(stand), optical head, and a light source


What are the main criteria to consider when choosing a microscope?

When choosing a microscope you must consider many factors. The reach of the stand, wattage, light source type, and motorized control setup are all important factors in choosing the correct microscope.


What accessories or modifications are generally available for surgical microscopes?

Common microscope accessories include video camera and recording devices. External devices such as OCT for ophthalmology, and navigation for neuro can also be connected.


What is an office or lab microscope and how do they differ from a regular surgical microscope?

A lab microscope is a tabletop scope with very high levels of magnification that are used in pathology. An office scope is a simplified version of a surgical microscope that is often used in ENT and dental applications. These can be placed on smaller stands or wallmounted suspension systems.


What kinds of stands are offered for surgical microscopes?

There are many options for stands that are dependent on discipline. For details contact us…


What are the differences between loupe and binocular magnification in microscopes?

Loupes are glasses that generally provide a magnification of around 2x-6x. Binocular magnification allows for different setups with varying magnification and requires an objective lens to achieve focus.

What is the range of magnification ranges available in surgical microscopes?

Varying configurations allow for most systems to have a magnification range of 4x-20x. Some systems allow for magnification of up to 40x.


What preventive maintenance do surgical microscopes require?

Recommended preventative maintenance is performed annually. Some systems require maintenance based on usage and have built in timers to provide notifications for needed maintenance.


How do you clean the optics for a surgical microscope?

Alcohol and swabs are used for basic cleaning of external optical glass. For internal optical cleaning please contact a service technician…


How do you replace a bulb in a surgical microscope?

Replacement bulbs come in various styles, housings, and installations. Please contact technical support…


What are the pros and cons of buying a refurbished microscope?

The most important part in buying a pre-owned microscope is to determine if it is refurbished, and not simply “used”. You also want to make sure that it is from a ISO certified company that can provide a warranty and continued support after the purchase.


What focal lengths are appropriate for different use cases?
The typical focal length of objective lenses used with a
• 12.5× eyepiece is increased magnification
• 175 to 200 mm for ophthalmology;
• 200 to 250 mm for plastic surgery, Ophthalmology,  oral surgery,
• 250 to 400 mm for ear, nose, and throat (ENT) or gynecologic, neurologic, and vascular surgeries.