Instruments In Optometric Practice Midterm Flashcards
-Also known as “OPHTHALMOMETER”.
-DIAGNOSTIC MEASURING THE CURVATURE OF THE (FRONT):ANTERIOR SURFACE OF THE CORNEA, MAINLY FOR ASSESSING THE EXTENT AND AXIS OF ASTIGMATISM.
-CURVATURE OF FRONT CORNEA
-KERATOCONUS
-KERATOMETER
used to obtain an objectives (x response px) measurements of the refractive error (EOR) of a patient’s eyes.
-subject response
-RETINOSCOPE
USED IN (RESPONSE)SUBJECTIVE REFRACTION IN ORDER TO IDENTIFY THE EOR OF THE PATIENT
-TRIAL LENS AND FRAME
- OPHTHALMIC DEVICE USED IN SUBJECTIVE REFRACTION.
-IT CONTAINS DIFFERENT LENSES USED TO MEASURE AN INDIVIDUALS REFRACTIVE ERROR AND DETERMINE OF EYEGLASSES PRESCRIPTION
PHOROPTER
USED IN A EYE EXAMINATION TO PROVIDE AN OBJECTIVE MEASUREMENTS OF A. INDIVIDUALS REFRACTIVE ERRORS.
Estimation amount EOR
-AUTO-REFRACTOR
AUTOKERATOREFRACTOMETER
USED BY THE OPTOMETRIST AND OPTICIANS TO VERIFY THE PRESCRIPTION IN PAIR OF EYEGLASSES, TO ORIENT AND MARK AN UNCUT LENS.
LENSMETER
-USED TO DETERMINE THE SMALLEST LETTERS YOU CAN READ ON A STANDARDIZED CHART.
-VISUAL ACUITY CHART/PROJECTOR
-TUMBLING E CHART
-USE TO SEE INSIDE THE FUNDUS OF THE EYE (INSIDE OF THE EYE) AND ITS STRUCTURES SUCH AS OPTIC DISK,MACULA,VEINS AND ARTERIES ETC.
-CRYSTALLINE LENS->CATARACT
Ophthalmoscope
-IS A MICROSCOPE WITH A BRIGHT LIGHT USED DURING AN EYE EXAM.
-IT GIVES A CLOSER LOOK AT THE DIFFERENT STRUCTURES AT THE FRONT OF THE EYE AND INSIDE THE EYE
-IT’S A KEY TOOL IN DETERMINING THE HEALTH OF YOUR EYES AND DETECTING EYE DISEASE.
-CONTACT LENS (FLAT,STEEP,IDEA)
-DRY EYES ASSESSMENT
-internal and external
SLIT LAMP
-USED TO MEASURE ALL AREAS OF YOUR EYESIGHT MAINLY YOUR CENTRAL AND PERIPHERAL VISION (,SIDE VISION)
-VISUAL FIELD TEST IS AN EYE EXAMINATION THAT CAN DETECT DYSFUNCTION IN CENTRAL AND PERIPHERAL VISION.
VISUAL FIELD INSTRUMENT
(EX: END-STAGE GLAUCOMA->TUNNEL VISION
USED TEST FOR COLOR VISION.
-USED IN TESTING COLOR VISION.
-SCREENING->PRESENCE OR ABSENCE C.V.D (1,OR 2 MISTAKES)
ISHIHARA PLATES
- IS USED TO PROVIDE A DETAILED ANALYSIS OF COLOR DEFIENCY. TO IDENTIFY ON WHAT DEFIENCY HAS THE PATIENT HAS.
-D-15 FARNSWORTH (confirm cvd + identify the type.)
Red color deficiency
RED PROTANOMALY
GREEN COLOR DEFIENCY
Green DEUTERANOMALY
BLUE COLOR DEFIENCY
BLUE TRITANOMALY
The 3 kinds of deficiency
PROTANOMALY
DEUTERANOMALY
TRITANOMALY
-OPIA=COLOR BLINDNESS-ABSENT
-MALY=COLOR DEFIENCY-PRESENT
-also known as “Synoptopher” it is an instrument designed to develop the fusion faculty of a patient.
AMBLYSCOPE
3 FUSION TEST USED IN SYNOPTOPHORE
1.SIMULTANEOUS PERCEPTION
2.FLAT FUSION
3.STEREOPSIS-(3-D VISION)
l>depth perception -judge distance of objects
(Binocular vision)
USED IN MEASURING OCULAR ALIGNMENT
-STRABISMUS,PHORIA
PRISM BARS
USED FOR ASSESSING A PATIENT’S DEGREE OF BINOCULAR VISION
Worth 4-Dot
-IS A TEST USED TO CHECK FOR STEREOSCOPIC DEPTH PERCEPTION AT ANY AGE LEVEL.
-IT CAN MEASURE HOW TWO EYES CAN DISCERN THE DIFFERENCE IN THE DISTANCE OF OBJECTS FROM THE OBSERVER.
Stereo fly test
-are contact lens made of gas- permeable materials that allow oxygen to reach the cornea.
-they correct refractive errors, including astigmatism.
10mm to 12mm
HARD CONTACT LENS
This is AN EXAMPLE OF HARD CONTACT LENS WHICH ALLOWS OXYGEN TO PASS THROUGH THE LENS.
RGP “RIGID GAS PERMEABLE”
-SOFT(SILICON HYDROGEL) CONTACT LENS VERY FLEXIBLE PLASTIC IS THAT ABSORB WATER .
-SOFT LENSES ARE MORE FRAGILE AND REQUIRE MORE INTENSIVE CLEANING.
-14mm (larger than cornea dimmeter)
SOFT CONTACT LENS
