Question

Cataract is the opacity or cloudiness of the crystalline lens, which may prevent a clear image from forming on the retina. What action is recommended for this condition?

a) Surgical intervention
b) Use of corrective lenses
c) Do nothing and refer to an optometrist
d) Prescription of eye drops

Answer 1

The recommended action for cataracts, a condition causing cloudiness in the lens of the eye, is surgical intervention, where the clouded lens is replaced with an artificial intraocular lens. Other options like corrective lenses or eye drops cannot reverse the cloudiness. Surgical treatment is successful and replaces the lens of the eye with a plastic intraocular lens.

Step-by-step explanation:

Cataracts are a common condition characterized by the cloudiness of the crystalline lens in the eye, which can lead to impaired vision. When considering treatment for cataracts, the most recommended action is surgical intervention. This procedure usually involves the removal of the clouded lens and its replacement with an artificial intraocular lens (IOL). The usage of corrective lenses or eye drops does not reverse the cloudiness, and while waiting for surgery, one may need glasses to aid vision. Regular check-ups with an optometrist or ophthalmologist are important in monitoring the condition.

In terms of how cataracts affect light, they cause light to be scattered or diffused, resulting in blurred or dimmed vision. With respect to laser treatment, such as that used in retinal repairs, laser light must enter the eye as parallel rays to ensure precise focusing and effective treatment.

The topic of cataracts relates to the broader subject of vision correction within the field of Biology. Cataracts are responsible for a significant amount of visual impairment and are most effectively treated through surgical means. It is also noted that proper protection against UV light, like wearing sunglasses, can help in preventing cataract formation.

Answer 2

The recommended treatment for cataracts, which involve cloudiness of the lens, is surgical intervention via replacement with an artificial lens, although eyeglasses may be necessary post-surgery for vision correction. Prevention of cataracts includes UV protection through sunglasses.

Step-by-step explanation:

Cataracts are a medical condition characterized by the clouding of the lens in the eye, which can impair vision. The recommended action for this condition is usually surgical intervention, where the clouded lens is replaced with an artificial intraocular lens. This surgery is generally successful and leads to significant improvements in vision. Cataracts are known to disperse light, reducing the clarity of the image that reaches the retina. Corrective lenses or eyeglasses may be needed post-surgery based on the individual's vision needs. However, surgery is the only definitive treatment to remove the cloudiness caused by cataracts.

Laser surgeries, such as LASIK, used in correcting refractive errors like myopia and hyperopia, involve shaping the cornea so that light focuses properly on the retina. It is critical that laser light entering the eye be parallel for precision in these surgeries. For cataracts, proactive measures such as wearing sunglasses that offer UV protection can help prevent the development of cataracts.