In eyes with normal vision, light focus on the light sensitive retina. Once the retina senses light, it converts the light into image that you see. in refractive errors, the eyes are unable to focus on the retina. This results blurred vision
Refractive Errors
Symptoms
Blurred vision
Double vision
Headache
Eye Strain
Type of refractive errors
Short-Sight (Myopia)
In Short sightedness, the light rays from an object form the image in front of the retina. Distant object are blurry, but object at near remains clear
Long-Sight (Hyperopia)
Hyperopia is when light focuses behind the retina because the eye is too smart. Distant object look clear, while near objects are blurry
Astigmatism
Astigmatism occurs when the curve of the cornea is irregular. This makes vision blurry at any distance
Treatment
Eye glasses
Astigmatism occurs when the curve of the cornea is irregular. This makes vision blurry at any distance
Refractive Surgery
Astigmatism occurs when the curve of the cornea is irregular. This makes vision blurry at any distance
Contact lens
Astigmatism occurs when the curve of the cornea is irregular. This makes vision blurry at any distance
Presbyopia
It is condition associated with the aging of the eye that results in progressively worsening ability to focus clearly on the close objects