{"id":18511,"date":"2023-11-24T16:14:34","date_gmt":"2023-11-24T16:14:34","guid":{"rendered":"https:\/\/www.prooptica.pt\/?p=18511"},"modified":"2023-11-28T12:46:45","modified_gmt":"2023-11-28T12:46:45","slug":"ophthalmic-lenses-frequently-asked-questions","status":"publish","type":"post","link":"https:\/\/www.prooptica.pt\/en\/lentes-oftalmicas-perguntas-frequentes\/","title":{"rendered":"Ophthalmic lenses | Frequently asked questions"},"content":{"rendered":"

Ophthalmic lenses play a crucial role in our visual perception, but doubts often arise about the best choice to suit our needs. Understanding the complexity behind ophthalmic lenses is crucial to ensuring an informed choice for eye health and visual comfort. In this article, we'll explore some of the most frequently asked questions that arise in this context.<\/p>\n

 <\/p>\n

What are the different types of ophthalmic lenses available?<\/strong><\/h6>\n

There are various types, including monofocal, bifocal, trifocal, progressive, photochromatic and polarised.<\/p>\n

What is a monofocal lens?<\/strong><\/h6>\n

It's a lens with a graduation\/power suitable for just one particular focal plane (far, intermediate, near).<\/p>\n

What are progressive lenses?<\/strong><\/h6>\n

These are lenses with multiple graduations\/power distributed vertically, offering a smooth transition between far, intermediate and near vision.<\/p>\n

\"Ophthalmic<\/p>\n

What are the differences between bifocals, trifocals and progressives?<\/strong><\/h6>\n

Bifocals have two graduations (far and near) and trifocals have three (far, intermediate and near), in well-defined steps and the separation of each zone is visible to the naked eye. They are clearly out of favour and have been replaced by progressive ones.<\/p>\n

How long do ophthalmic lenses last before they need replacing?<\/strong><\/h6>\n

It depends on use and care, but it is generally recommended to replace them every 2 years or according to changes in your vision.<\/p>\n

Can I use the same graduation for all my glasses?<\/strong><\/h6>\n

Usually yes, unless there are specific needs such as for desktop\/computer use that may require adjustments.<\/p>\n

\"Ophthalmic<\/p>\n

What is \"anti-scratch\" treatment?<\/strong><\/h6>\n

The use of the term \"anti-scratch\" is not correct, since in practice all lenses get scratched. Rather, this treatment improves the resistance of the lens surface by applying a hardening coat\/varnish.<\/p>\n

What are photochromic lenses?<\/strong><\/h6>\n

These are lenses that automatically darken and lighten in response to the presence or absence of UV light (i.e. sunlight).<\/p>\n

Can ophthalmic lenses have UV protection?<\/strong><\/h6>\n

Yes, contrary to what you might think, it's not just sun lenses that should have UV protection. \"Normal\" ophthalmic lenses can also have UV protection.<\/p>\n

 <\/p>\n

Consulting an optician is always the best option. However, this information already gives us an idea of the best solution for different visual needs.<\/p>\n

 <\/p>\n

See our Solution Lenses brochure<\/a><\/span>.<\/p>","protected":false},"excerpt":{"rendered":"

As lentes oft\u00e1lmicas desempenham um papel crucial na nossa perce\u00e7\u00e3o visual, mas muitas vezes surgem d\u00favidas sobre a melhor escolha que se adapta \u00e0s nossas necessidades. Compreender a complexidade por tr\u00e1s das lentes oft\u00e1lmicas \u00e9 crucial para garantir uma escolha informada sobre a sa\u00fade ocular e o conforto visual. Neste artigo, exploraremos algumas das perguntas […]<\/p>\n","protected":false},"author":2,"featured_media":18521,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[187],"tags":[],"class_list":["post-18511","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lentes"],"yoast_head":"\nLentes oft\u00e1lmicas | Perguntas frequentes<\/title>\n<meta name=\"description\" content=\"Neste artigo, exploraremos algumas das perguntas mais frequentes que surgem sobre a melhor escolha de lentes oft\u00e1lmicas.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.prooptica.pt\/en\/ophthalmic-lenses-frequently-asked-questions\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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