Dominant Eye Test

The dominant eye is the eye that looks directly at an object. The non-dominant eye is the eye that looks at the same object at a slight angle. This small difference provides depth perception.

Being right or left handed will not necessarily determine if you are right or left eye dominant.

Eye dominance is an important consideration for monovision correction to reduce the need for reading glasses or bifocals. Anyone who is presbyopic should consider monovision.

Determining the dominant eye is actually very simple. We have developed a free USAEyes Dominant Eye Test Card that you can download and print from your computer.

After printing the card, cut away the dotted lines. Hold the card at arm's length and focus on a stationary object through the center hole. While staying focused on the object, bring the card close to your face. The card will automatically center on the eye that is dominant. Feel free to distribute the USAEyes Dominant Eye Test Card to your friends.

Another similar test for eye dominance is with the both eyes open, raise your right arm and point to an object in the distance. Anything more than about 20 feet away is ideal. Continue to look at and point at the object and cover the left eye. Did your pointing finger seem to move off the target? Continue pointing and cover your right eye. Did your pointing finger seem to move off the target with your right eye covered? Your dominant eye is the eye you using when the pointing finger does not seem to move. Being right or left handed will not necessarily determine if you are right or left eye dominant.

Try both tests. They should both determine the same eye is dominant.

If you are ready to choose a doctor to be evaluated for conventional or custom wavefront Lasik, All-Laser Lasik, PRK, LASEK, Epi-Lasik, NearVision CK, RLE, or any refractive surgery procedure, we highly recommend you consider a doctor who has been evaluated and certified by the USAEyes nonprofit organization. Locate a USAEyes Evaluated & Certified Lasik Laser Eye Surgeon.

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Current Dominant Eye Medical Journal News...

Either a Th17 or a Th1 effector response can drive autoimmunity: conditions of disease induction affect dominant effector category.

Related Articles

Either a Th17 or a Th1 effector response can drive autoimmunity: conditions of disease induction affect dominant effector category.

J Exp Med. 2008 Apr 14;205(4):799-810

Authors: Luger D, Silver PB, Tang J, Cua D, Chen Z, Iwakura Y, Bowman EP, Sgambellone NM, Chan CC, Caspi RR

Experimental autoimmune uveitis (EAU) represents autoimmune uveitis in humans. We examined the role of the interleukin (IL)-23-IL-17 and IL-12-T helper cell (Th)1 pathways in the pathogenesis of EAU. IL-23 but not IL-12 was necessary to elicit disease by immunization with the retinal antigen (Ag) interphotoreceptor retinoid-binding protein (IRBP) in complete Freund's adjuvant. IL-17 played a dominant role in this model; its neutralization prevented or reversed disease, and Th17 effector cells induced EAU in the absence of interferon (IFN)-gamma. In a transfer model, however, a polarized Th1 line could induce severe EAU independently of host IL-17. Furthermore, induction of EAU with IRBP-pulsed mature dendritic cells required generation of an IFN-gamma-producing effector response, and an IL-17 response by itself was insufficient to elicit pathology. Finally, genetic deficiency of IL-17 did not abrogate EAU susceptibility. Thus, autoimmune pathology can develop in the context of either a Th17 or a Th1 effector response depending on the model. The data suggest that the dominant effector phenotype may be determined at least in part by conditions present during initial exposure to Ag, including the quality/quantity of Toll-like receptor stimulation and/or type of Ag-presenting cells. These data also raise the possibility that the nonredundant requirement for IL-23 in EAU may extend beyond its role in promoting the Th17 effector response and help provide a balance in the current Th1 versus Th17 paradigm.

PMID: 18391061 [PubMed - indexed for MEDLINE]