Macular Holes(Information courtesy of the National Eye Institute)
A macular hole is a small break in the macula, located in the center of the eye’s light-sensitive tissue called the retina. The macula provides the sharp, central vision we need for reading, driving, and seeing fine detail. A macular hole can cause blurred and distorted central vision. Macular holes are related to aging and usually occur in people over age 60. The size of the hole and its location on the retina determine how much it will affect a person’s vision.
Is a Macular Hole the same as Age-related Macular Degeneration?
No. Macular holes and Age-related Macular Degeneration are two separate and distinct conditions, although the symptoms for each are similar. Both conditions are common in people 60 and over. An eye care professional will know the difference.
What causes a Macular Hole?
Most of the eye’s interior is filled with vitreous, a gel-like substance that fills about 80 percent of the eye and helps it maintain a round shape.
The vitreous contains millions of fine fibers that are attached to the surface of the retina. As we age, the vitreous slowly shrinks and pulls away from the retinal surface. Natural fluids fill the area where the vitreous has contracted. This is normal. In most cases, there are no adverse effects.
Some patients may experience a small increase in floaters, which are little “cobwebs” or specks that seem to float about in your field of vision. However, if the vitreous is firmly attached to the retina when it pulls away, it can tear the retina and create a macular hole. Also, once the vitreous has pulled away from the surface of the retina, some of the fibers can remain on the retinal surface and can contract. This increases tension on the retina and can lead to a macular hole. In either case, the fluid that has replaced the shrunken vitreous can then seep through the hole onto the macula, blurring and distorting central vision. Macular holes can also occur in other eye disorders, such as high myopia (nearsightedness), injury to the eye, retinal detachment, and, rarely, macular pucker.
Is my other eye at risk?
If a macular hole exists in one eye, there is a 10-15 percent chance that a macular hole will develop in your other eye over your lifetime. Your doctor can discuss this with you.
What are the symptoms of a Macular Hole?
Macular holes often begin gradually. In the early stage of a macular hole, people may notice a slight distortion or blurriness in their straight-ahead vision. Straight lines or objects can begin to look bent or wavy. Reading and performing other routine tasks with the affected eye become difficult.
How is a Macular Hole treated?
Although some macular holes can seal themselves and require no treatment, surgery is necessary in many cases to help improve vision. In this surgical procedure–called a vitrectomy–the vitreous gel is removed to prevent it from pulling on the retina and replaced with a bubble containing a mixture of air and gas. The bubble acts as an internal, temporary bandage that holds the edge of the macular hole in place as it heals. Surgery is performed under local anesthesia and often on an out-patient basis.
Bioptics can help improve Vision.
Since the size of the macular hole is small and it’s edges are usually sharply defined, magnification can be very effective in helping individuals with macular holes see better. While conventional eyeglasses usually do not offer significant visual improvement, telescopes for distance vision, and very strong reading glasses, optical magnifiers and electronic magnifiers can be very helpful. Ocutech bioptics are particularly useful for distance and arm’s-length visual activities.