Night blindnessArgentina

Learn traffic rules with clear explanations and visual examples in our illustrated book, designed to make studying simple and engaging.


203. Night blindness

Night blindness, also called nyctalopia, is reduced ability to see in darkness or low-light conditions. It can make it difficult to recognise pedestrians, cyclists, road markings, bends or obstacles at night and during twilight. Night blindness can have different causes, including certain eye conditions, vitamin deficiencies or problems with the retina. Drivers who have difficulty seeing in low light should avoid driving in conditions where their vision is inadequate and seek professional eye care.

Night blindness
View through a windscreen while driving in heavy monsoon rain.
Wikimedia.org • Alex Proimos • CC BY
What is night blindness?

Night blindness is difficulty seeing in darkness or low-light conditions, even when daytime vision may be relatively good.

Why is night blindness dangerous when driving?

It can make pedestrians, cyclists, road edges, signs and obstacles harder to detect, reducing the time available to react safely.

Is night blindness the same as being completely blind at night?

No. Night blindness usually means reduced vision in dim conditions, not a complete loss of sight.

What can cause night blindness?

Possible causes include retinal disorders, cataracts, certain inherited eye conditions and some nutritional deficiencies. An eye-care professional can determine the underlying cause.

Can glasses correct night blindness?

Glasses may help when poor low-light vision is partly caused by an uncorrected refractive error, but not every cause of night blindness can be corrected with glasses.

Should you drive at night if you have night blindness?

If your low-light vision is not sufficient for safe driving, you should avoid driving at night or in other dark conditions and seek medical advice.

1 Argentina 2 Motorway 3 Speed limit 4 Minimum speed 5 Bike path 6 Speed bump 7 Slope 8 Bus stop 9 Stop sign 10 Give way 11 Roundabout 12 Road narrowing 13 Railway crossing 14 Mandatory direction 15 Turn prohibition 16 School area 17 Overtaking 18 Crossing animals 19 Curve 20 Wrong-way driving 21 Roadworks 22 Height limit 23 Traffic lights 24 International border 25 Parking 26 No parking 27 No stopping 28 Reversing 29 Uncontrolled crossroad 30 Licence plate 31 Charging station 32 Dip 33 Identity card 34 Pedestrian 35 Cyclist 36 Truck 37 Bus 38 Police 39 Ambulance 40 Taxi 41 Pothole 42 Path 43 Particulates 44 Air pollution 45 Rush hour 46 Road code 47 Street gutter 48 Cargo bike 49 Forestry vehicle 50 Construction vehicle 51 Semi-trailer truck 52 Trolleybus 53 Speed pedelec 54 Delivery vehicle 55 Idling 56 Tow truck 57 Four-wheel drive 58 Bicycle 59 Motorcycle equipment 60 Rail track 61 Caravan 62 Trailer 63 Tow hitch 64 Fire truck 65 Siren 66 Convoy 67 Emergency vehicle lighting 68 Agricultural machinery 69 Electric bicycle 70 Electric vehicle 71 Pedelec 72 Quadricycle 73 Microcar 74 All-terrain vehicle 75 Van 76 Recreational vehicle 77 Scooter 78 Trikke 79 Personal mobility device 80 Skateboard 81 Segway 82 Kick scooter 83 Roller skates 84 Mailman 85 Hitchhiker 86 Toddler 87 Child 88 Disability 89 Motorail 90 km/h 91 mph 92 Speedometer 93 Ride height 94 Dirt road 95 Driving 96 Start-stop system 97 Manual transmission 98 Automatic transmission 99 Throttle 100 Tachometer ... 101 Steering wheel 102 Power steering 103 Visual scanning 104 Mirror 105 Fuel 106 Fuel gauge 107 Petrol 108 Diesel 109 Diesel exhaust fluid 110 Car insurance 111 First aid kit 112 Fire extinguisher 113 High-visibility clothing 114 First aid 115 Concrete step barrier 116 Barriers 117 Vehicle lights 118 Street lights 119 Dipped beam 120 High beam 121 Fog lights 122 Front fog lights 123 Rear fog lights 124 Side lights 125 Turn signals 126 Hazard lights 127 Dashboard lights 128 Bicycle lighting 129 Bicycle bell 130 Headlight flashing 131 Seat belt 132 Child restraints 133 Head restraints 134 Airbag 135 ABS 136 Esp 137 Traction control system 138 Helmet 139 Bicycle helmet 140 Hands-free 141 Smartphone 142 GPS 143 Brake 144 Handbrake 145 Brake fluid 146 Tyres 147 Tyre code 148 Winter tyres 149 Tyre pressure 150 Snow chains 151 Bicycle tyre 152 Continuous track 153 Gross Vehicle Weight 154 Gross Vehicle Weight Rating 155 Cargo 156 Car body 157 Trunk 158 Roof rack 159 Windscreen 160 Emergency hammer 161 Car battery 162 Traction battery 163 Suspension 164 Shock absorber 165 Spring 166 Exhaust 167 Exhaust gas 168 Soot 169 Catalytic converter 170 Engine 171 Petrol engine 172 Diesel engine 173 Electric motor 174 Timing belt 175 Glow plug 176 Cylinder 177 Engine oil 178 Coolant 179 Maintenance 180 Spare tyre 181 Flat tyre 182 Jack 183 Vehicle inspection 184 Key 185 Dashboard 186 Windscreen wiper 187 Doors 188 Glovebox 189 Visibility 190 Rain 191 Fog 192 Hail 193 Sunlight 194 Sunglasses 195 Salt 196 Air conditioning 197 Hydroplaning 198 Distraction 199 Emotions 200 Road rage 201 Health 202 Epilepsy 203 Night blindness 204 Visual impairment 205 Fatigue 206 Defects 207 Traffic violation 208 Alcohol 209 Alcohol control 210 Ignition interlock device 211 Breath test 212 Breath analysis 213 Blood alcohol content 214 Blood test 215 Saliva test 216 Drugs 217 Medication 218 Penalties 219 Speeding 220 Smoking 221 Traffic enforcement camera 222 Accident 223 Injuries 224 Nosebleed 225 Damage 226 Breakdown 227 Warning triangle 228 Traffic rules 229 Driving school 230 Traffic signs