Dr. Colin McCannel

Retinal Surgery
Los Angeles, CA
32 years experience male

Locations

Office

Los Angeles, CA

Address

200 Stein Plaza, Los Angeles, CA
Directions

My office hours

Thursday: Closed
Show more

Fax

(310) 794-7904

About

Bio

Colin A. McCannel, M.D., Professor in the Department of Ophthalmology, Jules Stein Eye Institute, University of California, Los Angeles, United States of America. He received his title of doctor of medicine in 1991 from Mayo Medical School in Rochester, Minnesota. He completed a Medical Internship from 1991 to 1992 at the Mayo Graduate School of Medicine in Rochester, Minnesota, and went on to train in ophthalmology at the Department of Ophthalmology at UCLA and Jules Stein Eye Institute in Los Angeles, California. Between 1996 to 1998 he returned to the Jules Stein Eye Institute for a vitreoretinal fellowship. Between 1998 and 2008 Dr. McCannel has worked in the Department of Ophthalmology at the Mayo Clinic in Rochester, Minnesota as a vitreoretinal specialist. In the fall of 2008, he joined the Jules Stein Eye Institute. He is certified by the National Board of Medical Examiners since July 1991 and the American Board of Ophthalmology since October 1996. He is licensed to practice medicine in California and Minnesota. Dr. McCannel has received several honors beginning during his undergraduate years. He was part of the University Honors Program at his undergraduate college of California State University Northridge. He was the Outstanding Graduating Senior in the Department of Biology and the year previously was awarded the Outstanding Junior in the School of Science and Mathematics. He was listed in Who’s Who in American College and Universities in 1987. During his training he was co-winner of the Henry and Lillian Nesburn award for best research paper at the Jules Stein Eye Institute in 1995. He received the Teacher of the Year Award awarded by residents in the Department of Ophthalmology at the Mayo Clinic in 1996. He was a Heed Fellow in 1996-1997, and received a Paul Kayser Scholar Travel Fellowship awarded by the Pan-American Association of Ophthalmology in 1998. In 2008, he received the “Innovation in Teaching” award from the Mayo Clinic School of Continuing Medical Education. He is member of several organizations including the American and Minnesota Medical Association, American Academy of Ophthalmology, the Pan-American Association of Ophthalmology, American Society of Retina Surgeons, the Retina Society, and the Minnesota Academy of Ophthalmology. At the Minnesota Academy of Ophthalmology he has been a member of the Board of Directors since the year 2000 and served as the President of the organization in 2006/7 academic year. He has given many lectures throughout the world and has done book chapters and research papers. His specific interests include uveitis, digital imaging and clinical research trials. He is a reviewer for several prestigious journals including Archives of Ophthalmology, Ophthalmology and American Journal of Ophthalmology.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Retinal Surgery

Ophthalmology

Doctor Q&A

244 Answers
49 Agrees
The number of answers this doctor has agreed with.
A 22-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Rarely: Keratitis comes on a number of varieties (exposure=from drying, infectious, neurotrophic=abnormal nerves can lead to keratitis, etc. Any and all can ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Hard to know: for sure. However, the doctor is likely referring to the fluid from the wet macular degeneration. The fluid is what oozes out of abnormal vessels th... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 47-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Difficult: It is difficult to tell whether there is a retinal detachment by the patient him/her self. Flashes and floaters are warning signs, but very non-speci... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Macular hole: is a rare condition that involves the fovea (area of center vision) opening into a hole. it is most common in women in their 50's and 60's, but can oc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes and no: Floaters can lead to retinal detachment if td they are associated with a retinal tear. Please keep in mind that floaters are no always a sign of reti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Exam in person: A retinal examination is best done by a qualified eye care professional or a retinal specialist. It required dilation of the pupil and and a thorough... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes: While often overlooked and not talked about much, perhaps the earliest sign of macular degeneration (amd) is delayed adjustment from bright to dim lig... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Serious!: Sudden vision loss can have many causes, including but not limited to retinal detachment. Until proven otherwise, sudden vision loss is very serious,... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
If: If you have a family history of macular degeneration, get regular eye exams after 50.
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes, many: The most common condition that may cause wavy vision might be a macular pucker. Others include central serous chorioretinopathy, drusen in the macula... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Could be...: I generally agree with my colleagues that have already answered this question. However, there is one more thing to point out. Some retina specialist... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Possibly Serious: When there is as much discharge as described, it can be a very serious eye infection. I suggest an emergent evaluation by a pediatric ophthalmologist... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
No: Floaters in the eye have several causes, but not astigmatism. The most common cause is degeneration of the vitreous fluid. The floaters gradually get ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Not common, fixable: Minor to moderate trauma to the eye rarely causes retinal tears and detachment. When it occurs, retinal reattachment surgery with vitrectomy or scler... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes, but!: Flying will not affect an eye infection. However, if you have bacterial pink eye, you are very contagious. If the infection is bacterial, it should ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Genetics: The predisposition for macular degeneration is inherited. It is a very complex disease with several, if not many genetic mutations contributing to ri... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes, URGENT: If you have temporary blindness from graves disease, you may have compressive optic neuropathy. This is a very urgent problem, seek evaluation immedi... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Maybe: Parinaud's oculoglandular syndrome, or conjunctivitis with swollen lymph node between the back of the cheek and ear ("pre-auricular) and under the jaw... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 69-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Not predictable: Puckers are fairly common. Unless they affect vision in a way that either bothers the patient, or is moderate to severe, they are usually observed. ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Many causes: Central serous chorioretinopathy certainly is a common cause of fluid under the retina, but there are others, most are more serious. Make sure you ge... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Unclear: It is unclear what the question is. However, I suggest you get an eye exam, as new symptoms that affect vision should be evaluated. There are so man... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Dry eye syndrome: Dry eye syndrome (des) has many symptoms, stinging is one of the most common. Des can be managed with artificial tears. They are most useful when pl... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Over 50: By definition, age related macular degeneration is diagnosed if the patient is at least age 50 years old, and has typical macular findings. Individua... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Hasrd to say: There are so many ways vision can be lost from macular "damage." if the macula is damages from trauma or there is severe scarring, teh prognosis is g... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Same thing: A PVD is a posterior vitreous detachment. Vitreous detachment can be partial or complete, but it is nearly impossible to tell on examination. Thus, ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Urgently evaluate: It is difficult to diagnose from such little information! however, a number of the signs and symptoms suggest that diabetes needs to be excluded. Ty... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Days to weeks: Blood settled on on the bottom of the eye and gets absorbed. If there is only a small amount, it should be unnoticeable within days to a few weeks. ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Could be floaters: Opacities in the vitreous gel that fills the eye are enhanced when the light is bright and diffuse, and are called floaters. Patients who notice floa... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
No simple answer: High myopes always have a higher risk of retinal detachment (rd) than non-myopes. The risk is greatest while there are acute PVD symptoms (flashes, n... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
No: There is no association between blepharitis or conjunctivitis and blood calcium levels.
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Possible: Rathke's cleft cysts (pituitary gland cyst) are rare, and visual changes are common. Thus, it is not entirely likely that the visual changes you noti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Possibly yes: One sign of liver metastasis of cancer is indeed jaundice (yellowing of the skin) which may include the whites of the eyes turing yellow. Time to see... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
No: Wearing such a 'small' or minimal prescription may improve the vision only slightly, but will definitely not cause any harm.
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Possibly high lipids: The description is not very detailed, so I am going to guess at what is described. If it is indeed a grey to cream colored ring at the base if the co... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Vitreous detachment: Vitreous detachment, or separation, is the most common cause of new onset flashes. If you have new onset flashes, even if you only notice them when y... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 45-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Hard to say: Symptoms such as those asked about, when all together, may be caused by an anxiety attack. If the anxiety attack is accompanied by hyperventilation (... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 49-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes: The best science is for patients that have moderate age related macular degeneration. Taking vitamins (areds formula) reduces the risk of vision loss... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Unlikely: The eye surface has powerful infection control and prevention mechanisms, which include antibodies in tears and tear flow, and blinking. While it is ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 47-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Yes: If the white areas of the eyes are yellow or the skin is yellow, you need to urgently see a gastroenterologist. You may have hepatitis, alcoholic or ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 55-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
No cure: Dry eye is very common, and may be decided into subtypes. However, all dry eye has in common that it is difficult to control the symptoms. Artificia... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
You see blood cells: The blue field entoptic phenomenon occurs when one looks at a uniform blue background. Near the central vision, one sees light dots wiz around and by... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 66-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Not unusual: It may be of benefit to treat the area even in the absence of neovascularization. Details of your situation would be necessary to give an exact answe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
go with majority: Lattice degeneration may or may not be a significant risk factor for retinal tears and detachment. Since lattice is very common in myopia, and myopia... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 20-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Skin pigmentation: Changes can be part of healing. A stye and a chalazion are inflammatory lesions. This can cause the pigment cells in the skin to increase pigment, r... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Get eye exam: If you mean flashes by stars, it could be serious and a sign of retinal tear. Myopes have a much higher risk of retinal tears and detachment. Sudde... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Same: Those terms mean the same thing. Additionally, sometimes a pucker is referred to as "scar tissue on the retina", and "epiretinal gliosis." when appr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 66-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Get 2nd opinion : Patients with neovascularization and central retinal vein occlusion are usually treated with prp. However, neovascularization of the retina is actual... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old male asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Unrelated: Perhaps with the exception of dry eye. Symptoms of dry eye may be exacerbated with high levels of caffeine. This occurs because tear secretion can d... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old female asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Dermatologist?: How about seeing a dermatologist, they can be very helpful for a skin lesion that needs sorting out.
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old member asked:
Dr. Colin McCannel
Retinal Surgery 32 years experience
Get treated: That is a fairly common combination. Intermediate uveitis is an inflammatory condition, and can cause macualr edema as a secondary problem. When the... Read More
Created for people with ongoing healthcare needs but benefits everyone.

Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

4
Recommendations
176
Thank you notes
Jan 2, 2014
Thank so much for being a part of the Health Tap community for the benefit of both the patients and the doctors!
Dec 23, 2013
an excellent retina surgeon
HealthTap member
Mar 30, 2015
Dr. McCannel is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
This was very helpful. Thanks! Thank you! I am on my 2nd surgery after detachment as the small hole didn't seal after my first where gas was used. This time I got the buckle and oil and so I am just r...Read More
HealthTap member
This was very helpful. Thanks! Thnanks much for your time.I see ophthalmologist colleague q.3mos.I appreciate your opinion. Mike Michaels(also HT MD)
HealthTap member
Thanks for your quick reply! I read side effects for xepanicol is that people with kidney disease should not use it. Is that true?

Education & Training

Medical/Graduate school

Mayo Clinic College of Medicine, MN
Graduated 1991MD

Residency

Jules Stein Eye Institute, UCLA

Awards

Achievement Award, American Academy of Ophthalmology
Senior Honor Award, American Society of Retina Specialists
Honor Award, American Society of Retina Specialists

Affiliations

American Academy of Ophthalmology (AAO)
American Society of Retina Specialists
Macula Society
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