Pupil (central part of iris, brown or black colour part) becomes small when light falls, this is called light reflex.
With this action it prevents bright light entering eyes, causing damage to retina.
If this reaction is absent or sluggish pts will not be able to tolerate bright light and vision will not be clear due to light aberrations.
Post covid pupil reaction may be affected if there is any pupillary muscle paralysis.
Better to consult once.
Answered2021-10-27 12:22:11
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