Why TVs / laptops etc. do not warn about too brirght screen whereas many smartphones warn about too loud sound amplification?
<p>I'm trying to comfortably use my laptop at night and now could not find an answer by web-search to the following: Why TVs / laptops etc. do not warn about too bright screen whereas many smartphones warn about too loud sound amplification? I'm asking on law site cause I suspect there were a number of successful lawsuits for impaired hearing from headphones but none for impaired vision from TVs. Am I right here? Digging down - has it happened because there are studies proving impairment for one and none for the other?</p>
<p>Added: I actually doubt my second guess cause there are a lot of enhancements in screen brightness - auto-brightness, night mode.</p>

<h2>Because there is no evidence that screens damage vision</h2>
<p>There is copious research on this phenomenon and while screens can cause short term problems like eye irritation and headaches, these are self-evident and temporary. There is simply no evidence that screens cause long term damage to the eyes (for <a href="https://www.nature.com/articles/eye2015261" rel="noreferrer">example</a>).</p>
<h2>There is strong evidence that loud noise can damage hearing</h2>
<p>Hearing loss is a function of the volume of the noise and the duration of exposure (for <a href="https://whitecathearing.com/when-is-sound-dangerous" rel="noreferrer">example</a>).</p>
<p>Headphones are often worn for prolonged periods and can easily be louder than 80dB which is generally considered the threshold for hearing loss risk.</p>

civil-law