Brief Answer:
Repair is needed to prevent permanent vision loss

Detailed Answer:
Hello,

Thanks for your query.

A detached retina lacks oxygen, which causes cells in the area to die.
This leads to loss of vision, which is gradual in nature & ultimately results in permanent blindness.
Repair is needed to prevent this permanent vision loss.

The treatment modality (which ranges from Cryotherapy & Laser photocoagulation to Pneumatic retinopexy & Vitrectomy) is decided by the Ophthalmologist after a proper fundus examination & ruling out the risk factors for recurrence like Diabetes (Diabetic retinopathy), Hypertension (Hypertensive retinopathy), High degree of myopia, Increased intra-occular pressure, etc.

After treatment patients gradually regain their vision over a period of a few weeks.
However, if left untreated, total blindness could occur in a matter of days.

As you have mentioned in your post that the visual loss is progressing, it indicates that the underlying pathology is not controlled.
So, it is advisable to get a corrective operation before any permanent damage occurs.

Wishing you a good health.
Take care.

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