Flashes of light or black floaters that look like spiders or tadpoles are quite commonly seen by people with normal eyes. They occur because of changes in the vitreous jelly, which lies directly in front of the retina. Any changes in the vitreous jelly can give rise to the appearance of floaters but do not usually lead to any serious problems. No treatment is therefore necessary.

Separation or detachment of the vitreous from the retina is common phenomenon particularly in people over 50 years of age. In 90% of patients this is an entirely innocent change with no damage to the retina.

Vitreous detachment is a once in a lifetime event and the vitreous cannot be reattached. Often the floaters will persist but become less noticeable with time.

Flashes and floaters usually remain the same or get better. If they are troublesome, the effect of floaters may be minimised by wearing dark glasses. This will help especially in bright sunlight or when looking at a brightly lit surface.

When you were examined today, there was no sign of any damage to your eye and no treatment was considered necessary. You do not need to worry, but if the flashes or floaters become worse you should attend the casualty department to exclude any serious problems. If you see a black shadow or curtain effect or if you suddenly lose vision you should attend the casualty department without delay.

Patient Advice and Liaison Services

PALS is a confidential service for people who would like information, help or advice about the services provided by any of our hospitals. Please call 020 8869 5118 or e-mail lnwh-tr.pals@nhs.net between 9 am and 5 pm.

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Flashes and Floaters.