Blog

27 Aug Does eyeball size change after LASIK surgery? Mine now is 26.8 mm. Will it be reduced to 26 or less?

Posted at 15:38h in Uncategorized by woodhamseyedev

No. It is important to understand that after LASIK or any lens implant surgery you still have (and will always have) a "nearsighted" eyeball, i.e. an eye that is "too big" in diameter. [This is typically the cause of the nearsightedness itself.] These procedures only adjust the focusing power at the...

13 Aug Does the color of the irises affect eyesight (color perception, vision in the dark, etc.)?

Posted at 15:58h in Uncategorized by woodhamseyedev

To a small degree, Yes. The iris is a muscle sphincter that opens and closes to regulate the amount of light that passes through the pupil into the eye. The iris doesn't actually come in different colors; there is only a single brown pigment (for...

13 Aug When to Take a Break from Contacts

Posted at 15:44h in Uncategorized by woodhamseyedev

We've all been there. You realize too late that you've slept in day-wear contacts, or left town without bringing a contact case for your lenses. No big deal, we tell ourselves. Or is it? You probably won't suffer immediate consequences from neglecting your contacts occasionally. Many...

30 Jul Do you need a prescription for Vuity?

Posted at 16:07h in Uncategorized by woodhamseyedev

Vuity® is the brand name for a medical eye drop recently FDA approved to reduce the blurry near vision caused by presbyopia in middle-aged adults. The active ingredient in Vuity® is a very old ocular medicine once used to treat glaucoma: pilocarpine. But the concentration (1.25%) is much...

16 Jul What does my eye prescription say about my vision? The doctor was not very helpful. OD -7.50, OS -700. OD CYL +2.75, OS CYL +2.00. OD & OS AXIS 090.

Posted at 16:14h in Uncategorized by woodhamseyedev

One's vision and one's glasses prescription have only a loose correlation. Of course, the higher the Rx number means in general the worse the distance vision. But there isn't any sort of "-3.00 Diopters = 20/400" and "-4.00 D. = 20/800" visual acuity relationship. Once...

16 Jul Do the eye floaters disappear with time or they are permanent?

Posted at 16:02h in Uncategorized by woodhamseyedev

Vitreous "floaters" are the annoying, slightly out-of-focus remnants of the once transparent gel that filled the eye as a child. Since the vitreous has no purpose in the adult eye, it degenerates over time, leaving the floaters suspended loosely in the eye. They typically settle with...

02 Jul How Does the Eye Focus?

Posted at 16:17h in Uncategorized by woodhamseyedev

The eye is a complex organ that manipulates light much like a camera does; it has lenses to change the focus and a sensor to recognize intensity and color. How Does the Eye Focus? Starting with the Cornea The first layer of the eye that light hits is...

02 Jul If laser eye surgery is a safe and good thing, why do some people not go for it? They prefer glasses over it. Why? Even rich people like Bill Gates.

Posted at 16:12h in Uncategorized by woodhamseyedev

With all respect, the premise of your question is incorrect. Far more people wear glasses than contact lenses, but that does not mean contacts are not a "safe and good thing." Many millions of people have refractive surgery on their eyes every year. Most of...

18 Jun Is cataract surgery covered by health insurance?

Posted at 16:25h in Uncategorized by woodhamseyedev

The short answer is "Yes." Many people are unsure whether eye surgery is supposed to be a Vision Insurance or Health (called Major Medical) Insurance benefit. Vision Insurance is generally for routine eye exams, glasses, and contact lenses. Doctors of Optometry are the primary providers, along...

04 Jun What is happening when you press on or rub your closed eyes and begin to see colors and patterns?

Posted at 16:37h in Uncategorized by woodhamseyedev

What you are "seeing" are called "phosphenes. The retina is analogous to film in a camera, located at the very back of the eye. Its nerve cells (photoreceptors and others) can only appreciate a stimulus in one way: by "seeing" light of various wavelengths and intensity....