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Astigmatism (Clinical manifestations (Difficulty seeing at night,…
Astigmatism
Clinical manifestations
Difficulty seeing at night
Irriation
Distored
Itching
Squinting
Pathophysiology
The eye becomes steep along the vertical axis
Verical beams light focus in front
The eye has too much plus or cylinder in the horizontal axis
Vertical beam slightly spread before it reach the eye
Clinical management
Orthokeratology
Surgery
Corrective lenses
Glasses
Causes
Eye injury
Genetics
Diagnostic test
Keratometry
Refraction test
Pharmalogical intervention
Analgesia as prescribed
Glasses
Definition
Is the refractive error caused by optical disturbance of the cornea