I just got some mono focal lenses and I was told that I was going to need glasses for reading. But a day after the surgery I realized I can see Distance with no problems but I can also read messages on my cell, write messages, work on the computer, without wearing glasses. For very small print I will need them but I'm in no rush. I thought I wasn't going to be able to work on my computer.
@@Umearrr As a resident of Ontario, Canada, I could get for free. the basic mono-focal lenses on both eyes. I was offered multi-focal lenses for $3,000 which would allow me to never have to wear eye-glasses, unless for very small print. I thought about it and I then decided to go for the basic mono-focal lenses, not so much for the price but because it's a simpler lens to install. All I wanted was to be able to see distance and not have to wear glasses outside, especially during winter. I left the clinic and I could immediately see distance and could read. At my checkup visit the doctor was surprised about my sight and told me that the patients who chose mono-focal (distance) couldn't see as well for reading. I now feel like I have multi-focal but for the price of mono-focal. Even if I needed glasses for reading and for doing computer work I would still be very happy with my choice.
Best explanation I have heard so far about multifocal iol and blended vision. I have comorbidities in the dominant eye and multifocal is not recommended. The other eye has epiretinal membrane and probably a monofocal iol for near vision. The doctor did not tell me what kind he put in. Probably didn't think it was worth the time and effort to educate me. Thanks for the video sir.
I don’t understand how to use the Jackson cross. I never did that at my previous optometry job. I moved the cylinder knob, better 1 2, -.00 to -.50, if they said 2, I’d move the axis 45° each time better 1,2 then I’d end up at whatever axis and that would be it. That’s how I was taught to do it and I don’t understand why it’s wrong I really need help understanding this, please!!
Doctor, as a fellow medic contemplating cataract surgery in the foreseeable future -- 61 year old avid reader and home theater junkie with PVD in both eyes, myopic since early adolescence (don't mind glasses), healthy retina, excellent near vision WITHOUT reading glasses and index myopia in both eyes (RE acuity degraded to 6/9 after max correction) -- my question is: what is my ideal procedure at this point? Monofocal IOL (to enhance quality of near/intermediate vision or distant vision)? WHAT EXACTLY IS THE BLENDED VISION YOU MENTION? If I were to go for surgery ONLY for my right eye now, would that mean 'blended vision'? Thanks and regards.
Thank you, this is interesting and valuable to me as a visually impaired person since birth. Because of my special condition (ocular albinism, optic nerve hypoplasia which resulted in horizontal nystagmus, and strong nearsightedness), my few attempts to get glasses at various ages were not successful. I honestly answered all the doctor's questions during the subjective refraction process and it felt good while at the doctor's office, looking at the charts and objects nearby. But when I received the final glasses, it always felt weird, the world felt unstable and my weaker eye felt like it had something wrong with it and I constantly wanted to blink it to "make it clear". At one point I got interested in optometry and I figured out that maybe doctors are prescribing too strong values. Maybe I could get used to them if I wore the glasses all day long, but as those were distance glasses, I wore them only occasionally. So I bought a set of cheap trial lenses and a frame. I started with the SPH and CYL values I received from my doctor from the refractometer and retinoscope. Then I adjusted the values down until I felt comfortable wearing the lenses for prolonged periods of time walking around my home looking at distant things and watching TV at a distance. Then I visited my doctor again to check if my results made sense and were safe and appropriate for my vision. She confirmed that it looks OK, although it is noticeably weaker than the full correction I would need. But if the full correction makes me feel uncomfortable, then it's OK to have the prescription with the values I came up with. And now I've been having my easy-feeling glasses for three years already. I can wear them everywhere I go without having any issues to accommodate both when I put them on and take them off. My experiments with the lenses led me to a few important discoveries. First, although technically my eyes have about 1D difference and would need different values, my brain has used so much to the fact that one eye is weaker so that it just cannot tolerate it when the correction is applied to attempt to make both eyes have the same final refraction. Then I feel like something's wrong and want to blink and clear my weaker eye. So, in my case, it's better to apply the same correction to both eyes. Then I don't feel any discomfort between my eyes. Second, my "vertical vision" is completely unfixable and unreliable. I just cannot see vertical lines in the astigmatism test, no matter what correction is applied, unless the lines are very far apart. Maybe because of the heavy astigmatism and horizontal nystagmus since birth, my brain just did not learn to distinguish vertical patterns well enough. I once found a study paper, where they seemed to come to the conclusion that for some visually impaired people orientation discrimination can be very bad in the vertical direction because of how their retina or brain works and prescription will not help much. In childhood, I rotated all books 90 degrees because that way it felt easier to read. It got better at the age of 8, and then I somehow started reading normally. So, for this reason, subjective refraction for astigmatism becomes tricky. Essentially, the doctor has to completely ignore everything I say about vertical lines because I just don't distinguish them at all at a distance. I might be able to perceive that "something's not right" when given lenses that make vertical astigmatism more pronounced, but I won't ever say "Oh, I see vertical lines worse now" (unless we talk about very near vision for reading). I'm not sure if all doctors have paid enough attention to this fact when doing subjective refraction on me. At least I don't remember any of them asking me about vertical lines specifically, so when asked which lenses make the image clearer for me, my answer was always based purely on the clarity of the horizontal lines only because the vertical ones were always too blurry to make any reasonable judgments. I hope the experience I shared will help some doctors better understand how a visually impaired person might see things and what caveats to look for when doing subjective refraction on such patients.
This video was so helpful. I just had my first eye done last week at the age of 43, hence plenty more working years in front of the laptop to go, so the lens I selected (mono-vision) was really important. Hopefully I can get the enhanced version in 20 years.
Hi Dr. Hunter, Excellent. This is how I do my own refraction, using my trial lens kit. Current status? 20/20. Refractive state? +0.5 Diopters. No measured cylinder. Almost never necessary.
I have had Macula Oedema treatment since 2021 with injections like Avastin and Lucentis and finally 6 doses of intravitreal implant - Ozurdex every 3-4 months! I had the last one yesterday and now have some spots and floaters which my ophthalmologist says there is bleeding! What treatment can you recommend to correct this? Christopher Dias - Sri Lanka
I just had cataract surgery on my left eye , the dominate one. It was for distance and will have the other for closer vision. I was confused when you said it was difficult or didn't work well (this monovision) . your video was a bit lengthy and I do prefer when speakers can be succinct, as it makes it easier for a layperson to understand. I did have Lasik years ago and that worked wonderfully, and I believe it was a combination, near and far. I could shoot and nail a bullseye (with recurve bow) and could read quite well very small print, but that went away after a while. My doc said this procedure would be similar. Perhaps I misunderstood your video as I am tired and have to get ready for post op. thanks for your video and enthusiasm. Peter
So what if I only have one eye with the cataract and the other eye is clear with 20/20 both far and upclose. Would getting a monofocal lense in one eye set for distance create a blend and would that work to allow for no glasses?
Hey thank you. But I did my cataracts a year ago both eyes. I se well and I am ok except that they say I have early signs of macular degeneration And hopefully we can I hope regulate this to not go further 🙏🌹
@menamarybaldeosingh618: To boost the strength of the macula, take lots of vitamin C - and not the acsorbic acid kind which is just made from corn. Take vitamin C from Camu Canu, or eat loads of vitamin C-rich foods. There are also a few very necessary eye-health vitamins additionally like lutein and zeaxanthin which you can Google and which are very important to take also.
Do you use the Alcon Wavelight Ex500 Excimer laser? If so, what are your thoughts on Wavefront -Optimized ablation vs. Topographically guided ablation (Contoura)? Do you consider Contoura is always better than WFO if patient is eligible for it? Or is WFO better if patient has regular corneas without much HOAs and Contoura would just add extra noise in this case?
if yoy put enough pressure on ur eyes for long enough everything turnes white instead of black. and then if you open your eyes quickly you cant see for a good 4 seconds 😂😂 i used to do that sitting in math class in highschool
I have a Symfony lens in my left eye and a synergy lense in my right eye. Is this an example of blended vision? I need a capsulotomy in my right eye as my vision from the right eye is blurry which causes my overall vision to be blurry. I also have epiretinal membrane in my right eye. Will the capsulotomy clear up my blurry vision or will I need to have surgery for the epiretinal membrane as well?
Marketing tends to always tell you what the benefits of non-monofocal lenses are, but they don't explain to people what the COST for that benefit is. Always remember to ask what's the catch because there always is one. Monofocals have the best possible quality, contrast and color but the least range. To get range, you need to give up quality of vision, contrast and color, potentially also suffer from ghosting, glare and halos if you select a multi-focal diffractive lenses.
@@loganq as the light gets split over multiple focal points, you will have a severe impact to contrast, which also impacts your overall dynamic range. This is a very well understood side-effect of multifocals. The more the light is split the duller the colors become. With multifocals your blacks become more gray / brown and the entire spectrum is impacted. In low-light conditions the impact is more pronounced.
