As a person ages, the tissues tend to begin to sag and droop. If this sagging is severe enough, it can interfere with your vision. It is like a wearing a hat, when the upper part of your visual field is blocked by brim. Only instead of the brim of the had blocking your view, it is the tissues of your brows and upper eyelids. As the tissues sag, you have to work harder and harder to raise your eyebrows and open your eyes to see the upper half of your visual field. If the condition blocks more than 15 degrees of your upper your visual field, surgery may be required to remove excess tissues and to return the tissues to their original position. Common surgeries for this purpose are the brow lift and the blepharoplasty.
As the brow begins to lower with age, it can push down tissues over the eyes and obscure the upper visual fields. To restore the brow to its normal position, incisions are made at the hair line or in the scalp. Excess tissue is removed and the brow is elevated and re-suspended.
The upper visual fields can also be blocked by the tissues of the upper eyelid. Sometimes this is because there is excess tissue, but another cause can be from a separation of the muscle that elevates the upper eyelid. If it is simply an excess of tissue, trimming away of the excess tissues in a blepharoplasty can be done. If the problem is with the upper eyelid muscle, a levator muscle advancement will need to be performed. Sometimes both conditions are present, and both procedures need to be performed at the same time.
If you are experiencing upper visual field loss, a plastic surgery evaluation can determine where the problem lies, and how best to correct it.