Doctor insights on:
Pinhole Test Eye
Not definitively: Pinhole helps to test for any refractive error, and can help predict best potential acuity (pap). Lazy eye amblyopia is defined: DX of exclusion, once the visual pathway is determined to be ok but the vision is still limited due to developmental changes in the brain visual cortex. ...Read more
I have seen a lot of mixed opinions on if pinhole glasses will help one's eyes, but will wearing them do any harm?
Vertical monocular diplopia which resolves w/pinhole. Childhood amblyobia. Comp programmer, former boxer. Dry eyes? Displaced lens? M/50/non-smoker
Compared to standard: The chart used to test the eye is calibrated for normal vision at 20 feet. The outcome achieved is compared to what a normal eye can see at 20 feet. So if you can only see at 20 feet what a normal eye sees at 40 feet, your vision is considered to be 20/40. This is measured with and without corrective lenses at distance and at near. The vision with correction is considered to show the true vision. ...Read more
Which eye dominant?: This is very important in refractive surgery. Line up one's thumb with both eyes open focusing on a distant target. Close the right eye and see if it is still aligned with the thumb. If it is you are right eye dominant if not you will notice it aligned when you close the left eye and you are right eye dominant. ...Read more
No pain: There is a slight stinging from the numbing drop applied before the test. The test touches the center of the cornea with an ultrasonic, tiny probe which you will not feel. One touch is all and the data is recorded. Not a test to be worried about in the least. ...Read more
Yes.: Here is how to do it. Take a piece of paper and cut a small hole in it. Using both hands, hold it at arms length and look through the hole at something. While continuing to look, slowly bring the paper to your face. The hole will be around your dominant eye. ...Read more
Specific parts of Rx: To expand on dr. Proffitt's answer, sph = sphere; if this is a negative number, the prescription is a myopic or nearsighted prescription and a positive number dictates a farsighted or hyperopic prescription. Cyl = cylinder or the amount or power of the astigmatism correction. Axis is the direction in which the astigmatism correction is placed in the glasses. ...Read more
Amsler Grid: Is 1/4 inch graph paper with a dot on it. With each eye, you stare at the dot and pay attention to the lines. If the lines are missing or not straight, mark the area and call you ophthalmologist. This was described by french ophthalmologist marc amsler. ...Read more
Complicated: No single test is 100 percent for diagnosing glaucoma. As such, some tests may be normal (ie normal field of vision) while other tests (such as tests of eye structure) can show damage. Glaucoma involves damage to the eye - so if all the tests are normal and the optic nerve looks healthy then by definition that person doesn't have glaucoma (though they may be at high risk for getting it later on). ...Read more
Routine screening...: For glaucoma should be performed with any type of Eye exam. Typically this will include a vision and an eye pressure. However it is all known that one must look directly at the optic nerve to best assess whether not glaucoma is present. This is not always performed at every eye exam. If there is concern or an increased risk for glaucoma, that should be communicated well at time of visit. ...Read more
Get an exam: The best thing you can do to make sure your eyes are healthy is get them checked. So many diseases of the eye are "silent" that periodic eye exams are well worth the time and money. ...Read more
Multifocal: Current and latest refraction is always the best. ...Read more
Possibly: It would not be safe for your eyes though! You need to ensure proper fit, so they do not damage your eyes or lead to infections. ...Read more
Yes: Should not be a problem unless you have an eyelid issue you want assessed @ that visit. ...Read more
No: These numbers do not translate directly into a snellen acuity number (like 20/20). The degree of visual clarity is different than the eyeglass strength to achieve that clarity. ...Read more
What to do if I have ommetaphobia (fear of eyes) but I need to be able to do a test about eyes help?
Counseling: Phobias can be very successfully treated with a variety of modalities. Mental imagery, self-hypnosis, controlled breathing, etc. If the symptoms become severe, then anti-anxiety medication could be considered. ...Read more
Is there a test to find out which combination of eye colour genes (recessive/dominant/colours) a person carries?
I've been having vision disturbances in my left eye for 3 years now. All test results are normal. What should I do?
I feel tired. At times things looks blurred to me, went for eye test I don't have any eye power. What could be the issue?
Dryness: What you describe is consistent with abnormal tear function. Use lubricating eye drops like refresh or systane as needed. These can be bought without a persription. ...Read more
What do you suggest if I could use sph, cyl and axis on my eye test to rate my vision strength and if yes how to rate my vision strength?
The best number to use is sphere (sph). If you are nearsighted or myopic the number has a minus sign in front of it. The higher the number, the worse your uncorrected vision is.
If you are farsighted, the number is a plus sign and the same applies. The cyl stands for cylinder and is a measure of astigmatism. The higher the number, the worse the astigmatism ...Read more
I have a visterious seperation in my right eye. I also have had to catracs repaired. Is seeing my optomitist enough for the drop tests.
Eye issues: Posterior vitreous detachment and catarct surgery are both factors that can increase your risk for retinal tears or detachement. You should see an eye care provider who will not only dilate your eyes, but do a peripheral exam of the retina with a contact lens to macke sure no holes, tears or other pathology is there. ...Read more