Myopia studies

Influence of the time-of-day factor on short term ocular response to light and myopia control lenses

• Adults with good general health, age range 18-35 years
• Best corrected visual acuity of 20/20 or better in each eye, short-sighted (myopic spherical equivalent between 0.5D and 5D)
• Experienced contact lens wearer
• Have ocular health findings considered to be 'normal' (e.g. no ocular diseases, colour vision deficiency or history of eye surgery)
• Willing to sign informed consent and comply with study schedule
• Not using myopia control medications or devices
• Not using melatonin or any pharmacological sleep aids
• non-smoker

Role of Pupillary Responses in Myopia onset and Progression

• Aged between 18-35
• Have no ocular disease or history of ocular injury
• Best corrected visual acuity of 20/20 or better in each eye, short sighted (myopic spherical equivalent between 0.50 to 6D)
• No prior refractive surgery
• No ocular or systemic medications that may affect the pupillary response
• No history of amblyopia (lazy eye) or strabismus (eye not looking straight)
• Able to read and comprehend English
• Can be an experienced soft contact lens wearer or no prior contact lens wear experience

Characteristic Changes of Visual Functions using Multifocal Contact Lens

• Aged between 18-35 years old with good general health
• Have a 'normal' vision, measuring 6/7.5 or better with correction
• Are an experienced soft contact lens wearer, or willing to wear a soft contact lens
• Have a prescription between -0.50 and -4.00D, with less than -1.50D of astigmatism
• Have not previously used rigid contact lenses
• Have not had eye surgery
• Have good ocular health with no eye pathology, allergies, infections, or active ocular surface disease
• Are willing to attend two study visits
• Have normal colour vision

Characteristic Changes of Visual Functions using Atropine Eye Drops

• be between 18-35 years with good general and eye health
• Do not have any known allergy to atropine drops
• Have a prescription between -0.50 and -4.00D, with less than -1.50D of astigmatism
• Have not used atropine eye drops within the last 2 weeks
• Have no history or risk of glaucoma
• Are not currently using any eye medications or anti-depression medication
• Have 'normal' vision, measuring 6/7.5 or better with correction
• Willing to attend two study visits
• Have a normal colour vision

MALCOLM - MultifocAL COntact Lenses for Myopia

• Are aged 6-12 years (inclusive)
• Are willing to wear soft contact lenses daily
• Have Myopia (nearsightedness)
• Have otherwise normal vision, and good ocular and general health
• Have not previously used any myopia control treatments for more than 1 month or within the last month
• Does not have an eye turn, "lazy" eye, or a history of surgery or other treatments or medications which may affect eye growth or contact lens wear
• Have no plans to move for the duration of the study (1 year)
• Is competent enough in English to be able to fully understand the participant information and consent form or you can consent on their behalf