What is Synoptophore and it's uses in ophthalmic practice ?

1. SYNOPTOPHORE

Synoptophore is also called as amblyoscope.

Synoptophore (major amblyoscope) consists of two tubes, having a right-angled bend, mounted on a base. 

Each tube contains a light source for illumination of slides and a slide carrier at the outer end, a reflecting mirror at the right-angled bend and an eyepiece of +6.5 D at the inner end.

 The two tubes can be moved separately or together by means of knobs around a semicircular scale. 

Synoptophore is used for many diagnostic and therapeutic indications in orthoptics.

1. 2. WHAT IS A SYNOPTOPHORE ? 

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2. • It is an instrument which compensates for the angle of squint and allows the stimuli to be presented to both eyes simultaneously.
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4.  • It is an ophthalmic instrument which is used for diagnosing the imbalance of the eye muscle and treating them by orthoptic methods.
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1. 3. WHAT IS IT USED FOR ?

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2.  • It is used to investigate the potential for binocular function in the presence of a manifest squint. 
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4. • Specifically used in children (from 3 years of age). 
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6. • Also used to detect suppression and Abnormal retinal correspondance.
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1. 4. HOW DOES IT WORK ?

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2.  • Consists of two cylindrical tubes with a mirrored right angled bend
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4.  • A +6.50 D lens in each eyepiece which optically sets the testing distance to about 6 metres. 
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6. • Pictures are inserted in a slide carrier situated at the outer end of each tube.
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8.  • Two tubes are supported on columns which enable the pictures to be moved in relation to each other. 
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10. • It can measure horizontal, vertical and torsional misalignments simultaneously.
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1. 5. ESTIMATION OF GRADES OF BINOCULAR VISION

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2.  • Grade 1- (SIMULTANEOUS PERCEPTION) tested by two dissimilar but not mutually antagonistic pictures, such as a bird and a cage • 
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4. Grade 2- (FUSION) Ability of the two eyes to produce a composite picture from two similar pictures, each of which is incomplete in one small different detail. 
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6. • Grade 3- (stereopsis) Ability to obtain an impression of depth by the superimposition of two pictures of the same object which have been taken from slightly different angles.
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1. 6. DETECTION OF NORMAL/ABNORMAL ARC 

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2. • Done by determining the subjective and objective angles of squint. 
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4. • In normal retinal correspondance, these two angles are equal. 
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6. • In ARC, objective angle is greater than the subjective angle and the difference between the two is called angle of anomaly.

 

OPTOMETRY-SHARP VISION

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