Glenn Beck recently announced he may be going blind from macular dystrophy. That would be more accurately stated as macular corneal dystrophy and should not be confused with macular degeneration. Macular corneal dystrophy is an uncommon disorder of the cornea of the eye and macular degeneration is unfortunately a fairly common condition of the central retina inside the eye.
Macular corneal dystrophy results in greyish-white opacities and haze in the stroma, the central layer of the cornea. The condition is inherited and always occurs in both eyes and is perhaps the most vision threatening of the corneal dystrophies.
Will Glenn Beck go blind? His condition is certainly very scary for a patient to endure because few things elicit fear like the loss of one's eyesight! Yes, macular corneal dystrophy ("MCD") can definitely cause a decreased vision in both eyes as well as some possible eye irritation and eye pain. If his macular corneal dystrophy is mild it can be treated with phototherapeutic keratectomy using the excimer laser, the same laser used to reshape the cornea in LASIK. The treatment for more advanced MCD is a corneal transplant which is most certainly a major surgery.
Both of those procedures should restore Glenn Beck's vision to an acceptable level of visual acuity. However, there is the possibility that after either of those procedures that the MCD may return.