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066 再聊眼部“防晒”——对眼睛伤害最大的,恰恰是你看不见的那些光

066 再聊眼部“防晒”——对眼睛伤害最大的,恰恰是你看不见的那些光

讲点武德

我们在 061 眼部防晒比脸更重要,但90% 的人都做错了! 这期给大家简单科普了眼睛防紫外线的重要性,并且评论区出现了一位眼部光学领域的专业人士。 今天我们就请她来节目里,除了更正上期节目我们表达不够准确的地方,还会更深入的跟大家聊一聊紫外线是怎么伤害你的眼睛的,以及一个稍微有点硬核的知识点:东西看不清,不一定是因为光不够亮 🔥🔥眼部紫外线指数速查小工具 by 奶昔羊🔥🔥 欢迎大家加入听友群,可以添加小助理微信:daxiongnizaiganma,小助理会将您拉进听友群中 本期嘉宾:奶昔羊 光学工程专业,生物光子学方向博士,播客 Byte.Coffee 节目主播 02:05 第61期节目内容的回顾和勘误 15:49 各种功能的太阳镜,到底应该怎么挑选 25:18 有时候你看不清,不一定是因为不够亮 25:42 简单的眼部模型,以及各部分的功能 26:28 干眼症造成的看不清 27:49 失能炫光造成的看不清 30:24 夜间瞳孔放大造成的看不清——球差/光晕 34:13 除了标准视力表,还应该测测对比敏感度 36:00 这不是雪盲——whiteout 与 Troxler 褪色 参考文献 [1] Coroneo MT. Peripheral light focusing by the anterior eye and the ophthalmohelioses. Ophthalmic Surg. 1991;22(12):705-711.(角膜缘约 20 倍聚光) [2] King-Smith PE, et al. Optical analysis and reappraisal of the peripheral light focusing theory of nasal pterygia formation. Invest Ophthalmol Vis Sci. 2020.(PLF 不足以单独解释偏鼻侧) [3] American Academy of Ophthalmology. Topical Anesthetics: The Latest on Use for Corneal Abrasions. EyeNet.(警告滥用麻醉类眼药水) [4] Taylor HR, et al. Effect of ultraviolet radiation on cataract formation. N Engl J Med. 1988;319(22):1429-1433.(累积 UVB 翻倍、皮质性风险 ×1.6) [5] World Health Organization. Radiation: Ultraviolet (UV) radiation.(致盲约 20% 与日晒相关;新雪反射约 80%) [6] Boettner EA, Wolter JR. Transmission of the ocular media. Invest Ophthalmol. 1962;1:776-783.(眼介质透过随年龄变化的经典一手来源;儿童晶状体透 UV 更多) [7] ISO 12312-1:2022;GB 39552.1-2020(中国国标,2021-12 强制);UV400 标识。 [8] US EPA. Learn About the UV Index(云透过:晴≈100%、散云 89%、碎云 73%、全阴 31%;反射:雪≤80%、沙约 15%、水约 10%)。 [9] IJspeert JK, et al. The intraocular straylight function… dependence on angle, age and pigmentation. Vision Res. 1990;30(5):699-707.(散射随年龄四次方增长、70 岁翻倍) [10] CIE 146:2002. CIE Collection on Glare(失能眩光的 Stiles-Holladay 公式,θ⁻²)。 [11] Montés-Micó R. Role of the tear film in the optical quality of the human eye. J Cataract Refract Surg. 2007;33(9):1631-1635.(泪膜为最强折射面、约 43 D) [12] Koh S, et al. Effect of tear film break-up on higher-order aberrations. Am J Ophthalmol. 2002;134(1):115-117.(破裂后 HOA 增 1.44 倍) [13] Schwiegerling J. Scaling Zernike expansion coefficients to different pupil sizes. J Opt Soc Am A. 2002;19(10):1937-1945.(球差波前误差 ∝ ρ⁴) [14] Marín-Franch I, et al. The effect of spherical aberration on visual performance… typical of night viewing. J Optom. 2018;11(3):144-152.(夜间近视/星芒) [15] Contrast Sensitivity. StatPearls (NCBI Bookshelf NBK580542).(对比敏感度与 MTF 关系)

42分钟
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BBC六分钟英语|如何让家庭用餐轻松无压力?

BBC六分钟英语|如何让家庭用餐轻松无压力?

英音听力|BBC & 经济学人等

Stress-free family meals Neil Hello, this is 6 Minute English from BBC Learning English. I'm Neil. Georgie And I'm Georgie. Neil Some kids hate eating broccoli. For others, it's mushrooms. And worst of all, of course, are Brussels sprouts! Every parent of young children knows what food they will and won't eat. What food did you dislike as a child, Georgie? Georgie Ooh, when I was little, I used to absolutely hate nuts and avocados. But now, as an adult, I absolutely love both of those things. Neil I'm not surprised – they're delicious! Georgie What about you, Neil? Did you dislike any foods? Neil Do you know what? I think I liked most things. Georgie Family dinner time can be fun – a chance to reconnect, hear about everyone's day and share a meal. But when children refuse to eat the food that's been cooked, the result is often conflict rather than family fun. BBC Radio 4 programme The Food Chain asked child nutritionist and mother of two Charlotte Stirling-Reed whether her kids eat everything she gives them. Charlotte Stirling-Reed They definitely don't. We go through multiple periods of ups and downs where their appetite is much lower, and then all of a sudden it comes right back. It depends on the weather, what they've been doing that day. It can depend on their mood. Neil At dinner time, Charlotte's children go through ups and downs, a phrase meaning that a mixture of good and bad things happen to them. Sometimes they eat everything happily. Other times they don't. It depends on many things, including their day, the weather and their mood. A person's mood is the way they are feeling at a particular time. Georgie So, how can parents make dinnertime something everyone enjoys? In this episode, we'll be hearing from three experts on young children's eating habits and learning some useful new words and phrases too. Neil But first of course, Georgie, I have a question for you. Charlotte Stirling-Reed is a child nutritionist and she has some tips for stress-free family meals. Which of these do you think she recommends? Is it: a) make sure your child eats five pieces of fruit and veg a day, b) don't pressure your child to eat everything on the plate, or c) introduce your child to lots of new flavours quickly? Georgie That's quite hard. They all seem like quite good tips. I'm going to go with c) introduce your child to lots of new flavours quickly. Neil OK. We'll find out the answer later in the programme. Dr Anne Fishel is another expert in child nutrition. She co-founded the Family Dinner Project, an organisation promoting children's healthy eating in the US. Here, Anne explains one reason why mealtimes can become stressful, to Ruth Alexander for BBC World Service programme The Food Chain. Ruth Alexander Many parents say dinnertime can become a battleground, so why is it that what you're eating can trigger so much tension? Dr Anne Fishel I think for small children it's one of the few areas that they have control over. I mean, parents can cook what they want and serve it when they want, but it's up to kids to decide whether they're going to eat it. And for young kids, that's a big deal. They have some control. Georgie Dinnertime often becomes a battleground – a place where argument or conflict happens. Anne thinks that's because it's one of the few areas where children have control. For kids, controlling what they're willing to eat is a big deal – something of special importance to them. Neil If experts like Charlotte and Anne struggle at mealtimes, imagine how hard it could be if your child has a food allergy – a condition where the body makes you sick after eating certain foods. That was the experience of Sharon Wee, a food writer from Singapore, who speaks here with BBC World Service programme The Food Chain. Sharon Wee My daughter was born with allergies and it was quite a struggle at first. And to be honest with you, we found the winning formula, which was rice and beans, and she grew up eating rice and beans probably for the first five years of her life. Georgie Sharon's daughter's allergies restricted what she could eat, making cooking for the whole family a struggle. Luckily, Sharon discovered the winning formula – something her daughter could safely eat – rice and beans. A winning formula is a method or strategy that produces successful results. Neil So, Georgie, how can parents help their children develop good eating habits? Well, there are some things that our experts all agree upon. For one, give children a choice – for example, by offering small, healthy snacks and dips before the meal. And most importantly of all, create a stress-free atmosphere by not pressurising kids to finish everything on their plate. Georgie Right. Well, that also helps with your quiz question, Neil, so why not go ahead and reveal the correct answer? Neil I asked you what child food nutritionist Charlotte Stirling-Reed recommends for stress-free family meals. Georgie Yes. I said c) introduce your child to lots of new flavours quickly. Neil I'm afraid you were wrong, Georgie. The answer is actually b) don't pressure your child to eat everything on the plate. OK. Let's recap the vocabulary we've learned, starting with ups and downs – a phrase describing the mixture of good and bad things that happen to someone. Georgie Your mood is how you feel at a particular time. Neil A battleground is a place or situation where argument or conflict happens. Georgie If something is a big deal, it's of special importance to you. Neil A food allergy is a medical condition where certain foods make your body sick. Georgie And finally, a winning formula is a method or strategy that produces successful results. Once again, our six minutes are up. See you again soon. But for now, it's goodbye. Neil Goodbye! 词汇表 ups and downs 起伏,兴衰,沉浮 mood [muːd] n. 心情,情绪 battleground [ˈbætlɡraʊnd] n. 战场,战地,争论焦点 big deal 大事,至关重要的事情 food allergy [ˈælədʒi] 食物过敏 winning formula [ˈfɔːmjələ] 制胜法宝,成功的方法/策略 broccoli [ˈbrɒkəli] n. 西兰花,花椰菜 brussels sprout [ˌbrʌsəlz ˈspraʊt] 球芽甘蓝,抱子甘蓝 avocado [ˌævəˈkɑːdəʊ] n. 牛油果,鳄梨 child nutritionist [njuːˈtrɪʃənɪst] 儿童营养师 appetite [ˈæpɪtaɪt] n. 食欲,胃口 stress-free [ˌstres ˈfriː] adj. 无压力的,轻松的 dip [dɪp] n. 蘸酱,调味酱 📝 翻译及pdf见公众号【琐简英语】,回复1可加入【打卡交流群】

5分钟
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4周前
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摸鱼早报

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92分钟
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间接感受

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29分钟
59
4周前

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