Johnathon Selstad zalo

Effects of Red and Infrared Light (640-940nm) on Cataract Formation in Humans in the Absence of UV Light

Date: March 11, 2025

Executive Summary

This report examines whether red and infrared light in the wavelength range of 640-940nm can cause cataracts in humans when UV light is absent. After analyzing multiple scientific studies, safety guidelines, and expert opinions, the evidence suggests that red and infrared light within this range is unlikely to cause cataracts under normal exposure conditions. The primary mechanism for cataract formation from light exposure appears to be thermal rather than photochemical for these wavelengths. While high-intensity exposure could potentially cause thermal damage, typical therapeutic and environmental exposures fall well below established safety thresholds. Individuals with pre-existing eye conditions or those using photosensitizing medications should exercise caution, but for most people, exposure to red and infrared light (640-940nm) does not present a sign

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Fullscreen Canvas</title>
	<style>
	body, html {
	margin: 0;
	padding: 0;

	import tess
	import random
	import trimesh
	import manifold3d
	import numpy as np
	from time import perf_counter

	rand_color = [random.random(), random.random(), random.random()]
	def explode(convex_pieces, explode_amount = 1.5, debug_shapes = None):
	global rand_color

	import numpy as np
	import cv2
	import dxcam
	import win32api
	import threading
	import time
	#from line_profiler import LineProfiler

	class webcamThread(threading.Thread):
	def __init__(self):

	#ifdef RENDER_SNIPPET

	#include <vector>

	#include "PxPhysicsAPI.h"

	#include "../snippetrender/SnippetRender.h"
	#include "../snippetrender/SnippetCamera.h"

	using namespace physx;

	from ctypes import *
	from ctypes.wintypes import *

	# Constants
	# For touchMask
	TOUCH_MASK_NONE= 0x00000000 # Default
	TOUCH_MASK_CONTACTAREA= 0x00000001
	TOUCH_MASK_ORIENTATION= 0x00000002
	TOUCH_MASK_PRESSURE= 0x00000004
	TOUCH_MASK_ALL= 0x00000007

	/** This class provides Debug Utilities. */
	class Debug {

	/** Reroute Console Errors to the Main Screen (for mobile)
	* @param {Worker} worker */
	constructor(worker) {
	// Route Worker Errors Here
	worker.registerCallback("error", this.fakeError.bind(this));

	// Intercept Main Window Errors as well

	export default opencascade; // Optional Line
	declare function opencascade<T>(target?: T): Promise<T & typeof opencascade>;
	declare module opencascade {
	function destroy(obj: any): void;
	function _malloc(size: number): number;
	function _free(ptr: number): void;
	const HEAP8: Int8Array;
	const HEAP16: Int16Array;
	const HEAP32: Int32Array;
	const HEAPU8: Uint8Array;

	// This is just an example script for converting hand motions to PWM Servo Angles 1-255
	// Designed to be used with UnityModules - https://github.com/leapmotion/UnityModules
	using Leap;
	using Leap.Unity;
	using UnityEngine;

	public class HandAngleParser : MonoBehaviour {
	private const int N_FINGERS = 5;
	private const int N_ACTIVE_BONES = 2;

	import numpy as np
	import cv2
	import pyperclip
	from PIL import ImageFont, ImageDraw, Image

	laplacian = False
	density = 17
	font_size_y = 18
	blur = 5 # Must Be Odd