V
Ophthalmic Equipment
About KR Ophthamic Service Your Account Contact KR Ophthalmic Service Our Shipping Policy
SEARCH
  » Exam Lane Packages
  » Ophthalmic Equipment
     - Exam Chairs/Stands
     - Ophthalmic Phoroptor
     - Ophthalmic Slit Lamps
     - Tonometers & Non Contact
     - Ophthalmic Visual Acuity
     - Lensometer Auto-Manual
     - Ophthalmic Stools
     - Ophthalmic Tables
     - Trial Lens Set
     - Keratometer / (portable)
     - Ophthalmic Accessories
     - Auto Refractor/Keratometer
     - Ophthalmic Perimeter
     - Ophthalmic Topographer
     - Specular Microscope
     - Radiusgauge
  » Used Equipment
     - Miscellaneous
  » A/B Scans & Pachymeters
  » Diagnostics
     - BIO
     - Ophthalmoscopes
     - Streak Retinoscopes
     - Transilluminators
     - Handles
     - Pupilometers
  » Refraction Aids
     - Retinoscopy rack
     - Foreign Body Removal Kit
     - Exophthalmometer
     - Occluders
     - Spectacle loupes
     - Color test books
     - Alger brush
     - Prism Bars/Sets
     - Frame Warmer
     - Optical Flippers
     - Cross Cylinders
     - Skiascopy rack
     - Stereoacuity Testing
  » Ophthalmic Batteries
  » Ophthalmic Bulbs
     - Keratometer
     - Lensometer
     - Projector
     - Slit Lamp
     - Non Contact Tonometer
     - Ophthalmoscope
     - Retinoscope
     - Transilluminator
     - Radiusgauge
  » Lenses
     - Indirect lenses
     - YAG laser lenses
  » Optical Lab Equipment
     - Tint Units
     - Centering Device
     - Hand Lens Edger
     - Auto Polisher
     - Ultrasonic Cleaners
     - Lens Driller
     - UV Tester
     - Misc. Lab Equipment
     - Frame Warmer
     - Pattern Maker
     - Auto Beveller
     - Auto Groover & Beveller
     - Auto Lens Groover
  » Service

Home > Ophthalmic Equipment > Ophthalmic Visual Acuity
 

Ophthalmic Visual Acuity

 Sub-Categories
Ophthalmic Acuity Monitor
Ophthalmic Acuity Monitor
Ophthalmic Projector
Ophthalmic Projector
Projector Accessories
Projector Accessories

Ophthalmic Visual Acuity:

Ophthalmic visual acuity is the cornerstone of the ophthalmic examination. It measures central, or foveal, vision.

Vision is a complex human sense that consists of, but is not limited to, visual acuity, visual field, and contrast sensitivity. 

This review will specifically address the subjective clinical measurement of visual acuity. 

By definition, "the term visual acuity refers to an angular measurement relating testing distance to the minimal object size resolvable at that distance". 

Simply, it is the measure of the eyes’ ability to distinguish object details and shape at a given distance. 

Although visual acuity testing assesses only one aspect of visual function, it is the one test, when administered in a concise and consistent manner, which can detect changes in the integrity of the visual system.
 
 
 
Ophthalmic Auto Projector:
 
The autochart Projector is a device intended to project an image on a screen for vision testing.

Ophthalmic chart projector including a rotatable chart carrying disc and a mask plate which are co-axial with each other.

A light source and a projecting lens assembly are provided for projecting one of the charts on the disc and one of the mask openings onto a screen.

An index tube is mounted in the projecting optical path and carrying a colored filter on the inner periphery thereof.

Thus, an astigmatic index can be projected on the peripheral portion of the astigmatic examination chart.

The chart carrying disc, the mask plate and the astigmatic index tube can be controlled by knobs all provided on the front panel of the projector.