Brief Answer:
Can be retinal tear or detachement.

Detailed Answer:
Hi
Thanks for choosing HealthcareMagic for your query,

Firstly a briefing about your problem.
These symptoms are because of floaters. Floaters are dark specks in the form of dots, circles, lines, flashes or cobwebs that seem to move across your field of vision. Floaters are small clumps of visible material within the vitreous. Usually they remain clumped but in old age bits of debris are discarded by the vitreous humour or retina that causes protein (connective tissue) to be released.Hence crystal-like deposits may form in the vitreous and interfere with light passing from the front of the eye to the back.These floating particle within the vitreous are seen as shadows in retina.The vitreous sometimes pulls on the retina. This may cause you to see flashing lights or lightning streaks, even though there aren't any such lights present. When the vitreous separates from the retina.

Most common cause is Age-related eye changes. Eye floaters most commonly occur as a result of age-related changes in the vitreous.Over time, the vitreous partially liquefies — a process that causes it to pull away from the eyeball's interior surface. As the vitreous shrinks and sags, it clumps and gets stringy. Bits of this debris block some of the light passing through the eye, casting tiny shadows on your retina. Retinal tears can occur when a sagging vitreous tugs on the retina with enough force to tear it.
First suggestion is meet a retinal surgeon initially.And go for tests in details.
Treatment suggested
Almost all retinal detachments can be repaired with scleral buckle surgery, pneumatic retinopexy, or vitrectomy. But even with such a high rate of success for surgery, it is important to act quickly. The longer you wait to have surgery, the lower the chances that good vision will be restored.Great results are seen after scleral buckle surgery.




Regards.

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