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Causes and Types of Double Vision (Diplopia
- 1. Diplopia By Priyanka ( MBBS Student )
- 2. • A visual defect in which a single object is seen in duplicate ( double vision ) • Its of 2 types – Binocular & Uniocular
- 3. Binocular Diplopia • Formation of image on dissimilar points of the two retinas • Main causes are Paralysis or paresis of Extra ocular muscles Displacement of one eyeball Mechanical causes- pterygium, symblepheron Anisometropia Deviation of ray of light to one eye
- 4. Its further types are • Uncrossed Diplopia • False image seen on same side of deviation. It occurs in convergent squint. • Crossed Diplopia • False image seen on opposite side of deviation. It occurs in divergent squint.
- 6. Uniocular diplopia • Object appears double from the affected eye even when the normal eye is closed • Causes – Subluxated clear lens Subluxated intraocular lens Double pupil ( congenital anomaly ) Incipient cataract keratoconus
- 7. • Treat the underlying cause • Temporary relief by occluding the affected eye • Prism correction if deviation is small, in paralytic squint
- 8. Thank you !