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So whether there is light entering the eye or not, any stimulation of the retina will be translated into a light show by the brain. If you see stars or flashes after sneezing, it could be from a pressure on the eye itself, or from stimulation of the nerves that have to do with sight.
This lens causes light to diverge slightly before it reaching the eye. When farsightedness (called hyperopia) is present, a person is able to see far away objects well but has difficulty seeing close up objects. Light rays become focused behind the retina.Possible causes include eyeballs that are too short or by lens systems that have too little focusing power.his lens causes light to diverge slightly before it reaching the eye. When farsightedness (called hyperopia) is present, a person is able to see far away objects well but has difficulty seeing close up objects. Light rays become focused behind the retina.