What is the function of Biomicroscopy?

A microscope is an instrument that can be used to observe small objects, even cells. The image of an object is magnified through at least one lens in the microscope. This lens bends light toward the eye and makes an object appear larger than it actually is.

What is a Hruby lens?

Hruby lens (Figure 1 & 2) is a high minus (originally -58.6 D) non-contact lens mounted on the slit lamp for stability. It provides a high resolution, upright image of structures in the posterior pole. …

What is fundus Biomicroscopy?

Abstract. Non-contact fundus biomicroscopy permits a stereoscopic, highly magnified examination of the ocular fundus and vitreous with a large field of view. It should be considered the standard clinical technique for stereoscopic examination of the posterior pole of the eye.

Can you see retina with slit lamp?

In addition, when the slit lamp is coupled with a special magnifying lens, your doctor will be able to view the retina and the optic nerve located in the back of your eye.

Does a tonometer touch your eye?

Non-contact (or air-puff) tonometry does not touch your eye but uses a puff of air to flatten your cornea. This type of tonometry is not the best way to measure intraocular pressure. But it is often used as a simple way to check for high IOP and is the easiest way to test children.

What lens is closest to the stage on a microscope?

Objective Lens or Numerical Aperture This part of a compound microscope is the lens closest to the specimen. Ocular Lens In a compound light microscope, this is the lens closest to the viewer. Oil Immersion Lens This is a 100x objective lens.

What is a high power objective lens?

The high-powered objective lens (also called “high dry” lens) is ideal for observing fine details within a specimen sample. The total magnification of a high-power objective lens combined with a 10x eyepiece is equal to 400x magnification, giving you a very detailed picture of the specimen in your slide.

What is a Koeppe lens?

KOEPPE lenses enable examination of the iridocorneal angle and diagnosis of primary glaucoma by creating a corneal vault while leaving the anterior chamber undisturbed. A light slit lamp, head loupe or microscope is required to achieve desirable resolution and illumination.

What is 90d lens?

This slit lamp lens is used for general examination of the fundus and small pupil examinations. This Slit lamp lens is the most popular power for non-contact fundus examination. It offers a wide-field fundus imaging out to and beyond the equator.

Can you see fundus with slit lamp?

Fundus observation and gonioscopy with the slit lamp Fundus observation is known by the ophthalmic and the use of fundus cameras. With the slit lamp, however, direct observation of the fundus is impossible due to the refractive power of the ocular media.