This is by far one of the most ignorant post I have ever read on SDN. Why would you not consider an optometrist a "real" doctor? They obtain a doctorate in Optometry, just like an MD obtains a doctorate in medicine, and a DO obtains a doctorate in Osteopathic Medicine. Do you even know what an optometrist does, and the amount of training they undergo in order to carry out the daily duties that their profession entails? It's around 8 years, including undergrad training. A Doctor of Optometry is an independent primary health care provider who is trained to examine your eyes for glaucoma, diagnose diseases of the eye, conduct vision therapy, and to write prescriptions. An Optometrist can provide an eye exam and prescribe corrective lenses to improve your vision through the use of eyeglasses or contact lenses. They are NOT physicians who have an unrestricted medical license and the privilege to legally diagnose and treat any area of the body by medication or surgery. However, an Optometrist is nonetheless still a "DOCTOR" because they have obtained that title. You need to get the facts straight before you start belittling other doctoral degrees, because you are not only out of line with your post, you also sound like an uneducated jackass.
To the OP: "Doctor" is just a title and nothing more. This title can mean a variety of things (DC, OD, MD, DO, DPM, DVM, PhD, PharmD, PsyD, DPT, DDS/DMD, etc). I can pretty much go on all day. A doctor is merely someone that has obtained the highest degree of education that is available in a given discipline of study. It signifies that the individual has reached the end of his or her course work and is now a professional in his or her chosen topic of study. I think a lot of people in this thread are confusing the title of a DOCTOR (anyone with a doctoral degree) with the title of a PHYSICIAN (Only MD/DO). It would just be plain silly, and not to mention idiotic to think that that just because someone has "doctor" in front of their last name, that they are a trained PHYSICIAN. However, I do believe that there is a certain amount of respect that should be given to anyone who has devoted a chunk of his or her life to achedemics (the time it takes to complete a doctoral degree) so that he or she can make a some kind of contribution to the world, rather it be through research(PhD) or improving the quality of life of some some living form (MD/DO, OD, DC, DPM, DPT, DDS/DMD, DVM, etc). For whom it may concern, these are best definitions I could find regarding the term "doctor".
Compliments of
www.Dictionary.com
Main Entry: 1doc·tor

Pronunciation: 'däk-t&r
Function: noun

1 a : a person who has earned one of the highest academic degrees (as a PhD) conferred by a university b : a person awarded an honorary doctorate by a college or university

2 : a person skilled or specializing in healing arts; especially : a physician, surgeon, dentist, or veterinarian licensed to practice his or her profession