This age group needs routine ceck at entry to school for- mild squint, spectacle power and lazy eye which may go undetected otherwise, and which when treated respond best at this age. Allergies in the eye are also very common in this age group.
With increasing use of computers, eye problems are on the rise- timely check up gives relief from symptoms & increases productivity. Disorders like glaucoma, diabetic retinopathy are often silent at first. A routine check up may pick these up early, allowing timely treatment and better outcomes
When done for eligible(on pre evaluation) candidates only-it is safe and has excellent outcomes.
In some individuals some amount of regression can occur-usually if the initial number was very high/ during pregnancy. Sometimes(not always) this can be corrected by "top-up" treatments
No, though loss of some amount of quality vision may occur if there are complications(rare) -these can be treated but take time and may need further procedures.
If the details of procedure are not kept as records& there is inadequate follow up, planning of cataract surgery in future may be difficult, glaucoma diagnosis may be delayed.