
What Causes Spots In The Field Of Vision?

You need to understand the physiology of vision
Detailed Answer:
Thanks for asking on HealthcareMagic.
I have gone through your query and understand the complaints that you have. There are two broad aspects of vision. The first is refraction where the rays of light are focussed on the retina. The second is the transduction of light energy into nerve impulses to be be carried to the brain. The retina is the photoreceptive layer of the eye which does this. The retina contains two types of photoreceptive cells viz. the rods and cones. While the rods are responsible for a diffuse non-specific type of low light vision, the cones are responsible for color vision in bright light. You would appreciate that the vision in the periphery of our visual field is not so sharp as compared to the center of our visual field. This is because the rods are more at the periphery and the cones more towards the center of the retina. Moreover, there are different varieties of cones associated with detection of different frequencies (white light comprises of VIBGYOR i.e. different frequencies). The presence of pits and depressions indicates that the thickness of the retina is uneven and so is the distribution of the cones. Thus is the distribution of cones is irregular or uneven, a color tinge or variation in darkness and contrast are likely. The problem is less evident when there is plenty of light in the morning. Although you have proper refraction of the light on the retina (i.e. your vision is ok for both the eyes), you still have this problem.
I hope that I have been able to explain the reasons behind. Let me know if you need to know anything more.
Regards

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