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Visual Acuity is a measure of how well a person sees. It is expressed as a fraction (e.g. 20/20) where the numerator is the testing distance and the denominator is the distance at which a person with normal eyesight can read the letters on the chart. For example, if the smallest letters that the person being tested can see are on the “20/40″ line, it means a person with normal eyesight can see these same letters at a testing distance of 40 feet. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

Yet another myth is that polarized, anti-glare lenses are all you need to protect your eyes from UV rays. This also is false. While polarized and anti-glare lenses may offer better image clarity, a more comfortable viewing experience and give you better vision when driving or playing sports, they have nothing to do with UV protection. That being said, most polarized lenses also offer adequate UV protection. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

Another myth regarding sunglasses is that photochromic lenses don’t block out UV rays as well as regular sunglasses. This, too, is false. As long as they offer 100% UV protection, photochromic lenses (such as the Transitions-brand) provide the same level of UV protection as regular sunglasses. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

A condition where the eye loses its ability to focus with aging. A person with presbyopia experiences difficulty and takes longer in switching between objects at different distances, such as, between the road and the speedometer when driving a car. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

Myopia is a visual defect where the light rays focus in front of the retina instead of on it due to steeper cornea or longer eyeball. People with this condition can see nearby objects clearly but distant objects appear blurred. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

Another popular myth regarding sunglasses is that you should have UV coating put on your lenses for extra protection. Again, this is absolutely false. If your glasses already have UV protection, they do not need to have added protection put on them. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

Another common myth with regards to sunglasses is that lenses with darker tints are more protective than lenses with a lighter tint. This too is absolutely false. The tint of the lens has nothing to do with the UV protection of the glasses. A clear lens with no tint and 100% UV protection is better for your eyes than dark, heavily tinted sunglasses without UV protection. In fact, dark lenses without adequate UV protection are actually worse for your eyes than not wearing glasses at all, because the dark tint causes your pupils to become dilated, thus exposing your eyes to more harmful UV light. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

It is a visual defect where the light rays focus behind the retina instead of on it due to flatter cornea or shorter eyeball. People with hyperopia have difficulty seeing objects close up. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

A common myth regarding sunglasses is that sunglasses with 100% UV protection are expensive. This is absolutely false. You do not have to pay a premium for proper UV protection. While more expensive sunglasses may offer more stylish frames, higher quality lenses, sharper images and less glare, it is very easy to find inexpensive sunglasses that offer 100% UV protection. For further information or to book an appointment please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE

A type of bifocal lens in which the lens power changes gradually, from the center to the periphery of the lens. For further information or to book a contact lens appointment with one of our doctors please call any of our three Rochester, NY Cornerstone Eye Associates locations in Gates (585-328-0153), Brighton (585-244-2200) or Irondequoit (585-266-7880).

Cornerstone Eye Associates – your VISION for LIFE