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One theory suggests that cyanopsia may develop due to the sudden unmasking of blue light sensitivity after cataract surgery, as the brain adjusts to the removal of the natural lens. For medication-induced cyanopsia, the inhibition of PDE6 is believed to temporarily disrupt normal photoreceptor function, emphasizing blue light in visual perception.
Moreover, people are advised to wear sunglasses on bright days, since the eyes become more sensitive to bright light for a prolonged period after surgery. [93] Topical anti-inflammatory drugs and antibiotics are commonly used in the form of eyedrops to reduce the risk of inflammation and infection.
After surgery, to prevent contamination, the eyes should not be rubbed and the use of eye makeup, face cream or lotions should be avoided. Excessive dust, wind, pollen or dirt should also be avoided. Sunglasses should be worn on bright days because the eyes will be more sensitive to bright light for a while. [37]
Posterior capsular opacification, also known as after-cataract, is a condition in which months or years after successful cataract surgery, vision deteriorates or problems with glare and light scattering recur, usually due to thickening of the back or posterior capsule surrounding the implanted lens, so-called 'posterior lens capsule opacification'.
During cataract surgery, the opaque natural crystalline lens is replaced with a synthetic intraocular lens (IOL). The IOL may be designed to filter out equal, more or less UV light than the natural lens (have a higher or lower cutoff), and therefore attenuate or accentuate the blue-light hazard function.
Early symptoms may include strong glare from lights and small light sources at night and reduced visual acuity at low light levels. [3] [4] During cataract surgery, the cloudy natural lens is removed from the posterior chamber, either by emulsification in place or by cutting it out. [2]
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It is light-sensitive and communicates visual messages to the brain. If the retina detaches, it moves and shifts from its normal position. This can cause photopsia, but can also cause permanent vision loss. Medical attention is needed to prevent vision loss. Procedures may include laser treatment, freezing, or surgery.
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