The process of vision begins when light rays that reflect off objects and travel through the eye's optical system are refracted and focused into a point of sharp focus on the retina.
Refractive Errors
Refractive errors are optical imperfections that prevent the eye from properly focusing light, causing blurred vision which can be for distance vision, near vision or reading or both. If this happens in early age it can lead to crossing of eyes or squint in children and may cause permanent damage to vision. Types of Refractive error
Nearsightedness (Myopia) • Close objects are clear far-away objects look blurry • Often discovered in childhood and progresses throughout the teenage years.
Farsightedness (Hyperopia)
• Close objects are more blurry than distant objects.
• In mild hyperopia, distance vision is clear while near vision is blurry.
• In advanced hyperopia, vision can be blurred at all distances.
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