Zdroje

https://www.jadem.wz.cz/kresby.html

https://primar.sme.sk/c/4117013/stavba-a-funkcia-oka.html

https://www.videnie.sk/choroby-oka/choroba-oci

https://www.farbocit.sk/index.php?

https://www.colour-blindness.com/sk/other-eye-illnesses/long-short-sightedness/

https://www.sosovky.sk/ocne-chyby/kratkozrakost/

https://www.lekarionline.sk/ocne-lekarstvo/zakroky/liecba-strabizmu-skulenie

https://www.zdravie.sk/sz/content/461-54/sivy-zakal-liecba.html