Astigmatism

This study follows adults who had cataract surgery with Clareon Vivity or PanOptix intraocular lenses, which are designed to restore vision at multiple distances. Researchers will track visual acuity and watch for complications like lens dislocation or retinal detachment over sev…

This trial evaluates whether REVIVE toric soft contact lenses can effectively correct vision in adults with astigmatism. Participants wear the lenses daily for about a week, and researchers measure visual acuity at a follow-up visit. The study aims to assess the lenses' performan…

This trial compares two surgical techniques for removing a pterygium, a fleshy growth on the eye's surface that can distort vision. Researchers are testing whether using a piece of the patient's own conjunctiva (the clear tissue covering the eye) or a preserved amniotic membrane …

This study tests whether a laser-guided system can mark the correct position for a toric intraocular lens more accurately than the traditional manual ink method during cataract surgery. The trial involves 30 patients with corneal astigmatism who are having femtosecond laser-assis…

This study is checking the long-term safety and performance of a special lens called the Clareon Toric IOL, which is implanted during cataract surgery to also correct astigmatism. About 129 people with cataracts and astigmatism are taking part. The main goal is to see how well th…

This study examines how wearing Ortho-K contact lenses overnight changes the optical quality of the cornea in children and young adults aged 8 to 21 with mild to moderate nearsightedness and astigmatism. Participants wear the lenses for 8–10 hours each night, and researchers meas…

This study tested a new type of artificial lens (PODEYE TORIC) for people having cataract surgery who also have astigmatism, a condition where the eye is shaped like a football instead of a basketball. 261 adults received either the new lens or a standard lens to see if it safely…

This study looked at the long-term safety and performance of AcrySof PanOptix trifocal lenses in 211 people who had them implanted in both eyes 3 to 5 years earlier. Researchers checked vision and recorded any eye problems or device issues. The goal was to make sure these lenses …

This study tested a toric intraocular lens implant in 40 children aged 6 to 17 with cataracts and astigmatism (a condition where the eye is shaped like a football). The goal was to see if this special lens could improve vision better than standard surgery. All children had catara…

This study tested a special laser (femtosecond laser) to adjust an artificial lens already placed inside the eye after cataract surgery. The goal was to correct leftover blurriness or astigmatism so people need glasses less. Twelve adults with at least one diopter of remaining re…

This study tested the safety and effectiveness of the EVO/EVO+ Visian Implantable Collamer Lens (ICL) in 327 adults with moderate to high nearsightedness (with or without astigmatism). The lens is surgically placed inside the eye to correct vision. Researchers tracked side effect…

This study looked at how well a special lens implant, called the Visian Toric ICL, works over two years for people with nearsightedness and astigmatism. A total of 125 participants received the implant, which sits behind the iris. The main goal was to see if the lens stays in pla…

This study looked at how often eye pressure rises after getting an EVO ICL lens implant to correct nearsightedness and astigmatism. Researchers measured pressure in 205 people right after surgery. The goal was to see how many eyes had high pressure, which can be a risk after this…

This study tested a special toric lens implant (RayOne EMV Toric) in 274 adults with cataracts and mild corneal astigmatism. Participants had cataract surgery and received either the toric lens or a standard monofocal lens. The goal was to see if the toric lens safely reduces blu…

This study followed 105 adults who received a special lens implant (Mini Toric Ready) during cataract surgery to also correct astigmatism. Researchers measured how well the lens improved vision and stayed in place at least one year after the procedure. The goal was to confirm the…

This study tested a new laser system called Cheetah to correct nearsightedness (myopia) with or without astigmatism. About 286 adults with mild to moderate nearsightedness received the treatment. The main goal was to see how many patients achieved clear vision without glasses one…

This study tested toric intraocular lenses (IOLs) in 236 children aged 3 to 8 who had cataracts and at least 2.0 diopters of astigmatism. All children had cataract surgery and received the special lens implant. Researchers tracked their vision and eye health for three years to se…

This study tested a new prototype device that uses light field technology to measure vision problems like nearsightedness and farsightedness. Researchers compared its accuracy to standard methods in 120 healthy adults. The goal was to see if this new approach could reliably deter…

Researchers compare kalifilcon A daily disposable toric contact lenses with Ultra for Astigmatism lenses in adults who already wear soft contacts and need astigmatism correction. Each participant wears both lens types for about one week each, in random order. The study measures h…

This study tested a new type of daily disposable contact lens for people with astigmatism. 281 contact lens wearers tried the lenses to see how well they corrected vision, stayed in place, and felt comfortable. The goal was to make sure the new lenses are safe and work well for e…

This study will test how comfortable and clear TOTAL30 Multifocal contact lenses feel after wearing them for up to 16 hours. About 36 adults who already wear multifocal contacts will rate their comfort and vision at several points during the day over one month. The goal is to see…

This study tested two types of daily disposable contact lenses for people with astigmatism to see which one felt more comfortable. 134 adults wore each lens for one week and rated their comfort. The goal was to find out which lens provided longer-lasting comfort and a better over…

This study tested how well people with astigmatism who had never worn contact lenses liked a new type of soft lens that is replaced every week. Forty adults wore the lenses for about three weeks and reported on their vision and comfort. The goal was to see if these lenses could b…

This study tested two types of soft contact lenses—Myday Sphere and Myday Toric—in 32 people who already wear spherical lenses but have low astigmatism. Participants wore each lens type for one week and rated comfort on a 0-100 scale. The goal was to see if the toric lens offers …

This study compared two types of laser eye surgery—FS-LASIK and single-step TransPRK—for correcting mixed astigmatism, a condition where the eye's shape causes blurry vision at all distances. Thirty-nine people received one of the two procedures, and researchers measured their vi…

This completed study compared two types of soft toric contact lenses for people with astigmatism. Forty-two participants wore each lens briefly and rated them on comfort, vision, and overall satisfaction. The goal was to see which lens performed better in the short term.

This study tested new multifocal contact lenses designed for people with both presbyopia (age-related blurry near vision) and astigmatism (blurry vision due to an irregularly shaped cornea). 95 habitual contact lens wearers wore the lenses for 30 days, and researchers measured ho…

This study tested a special lens implant (EVO+ Visian ICL) in 47 adults to correct or reduce nearsightedness, farsightedness, astigmatism, and age-related reading problems (presbyopia). The lens was placed inside the eye to improve vision at all distances without removing the nat…

This study tested whether a program of eye exercises could improve visual function and quality of life in 40 adults with refractive errors like nearsightedness, farsightedness, or astigmatism. Participants did 20-minute sessions three times a week for eight weeks, plus home exerc…

This trial tests two different soft toric contact lenses, Acuvue Oasys for Astigmatism and Air Optix for Astigmatism, to see how much they rotate on the eye. Researchers will measure lens rotation in adults with astigmatism who have never worn contacts, using a special microscope…

This study looks at how residual astigmatism affects vision in people who have already received the Clareon Vivity extended vision intraocular lens (IOL) during cataract surgery. Researchers will temporarily induce astigmatism using trial lenses and measure changes in distance, i…

This study checked if a smartphone app called VisionApp can accurately measure vision problems like nearsightedness and presbyopia (age-related reading difficulty). Sixteen adults aged 40 and older used the app at home, and their results were compared to standard eye exams. The g…

This study tested a new device called the EYESTAR 900, which uses light to take detailed measurements of the eye's shape. 29 people with healthy eyes, corneal scarring, or irregular astigmatism took part. The goal was to see how well the new scanner measures eye geometry compared…

This study looked at data from 1100 people who had SMILE laser eye surgery to fix nearsightedness. Researchers used a computer model to predict how well patients would see one year after surgery. The goal was to see if the model could give more accurate results than the usual pla…

This study tested how well a new device (ELITA) docks onto the eye for refractive error treatment. 55 adults participated to see if the docking procedure works correctly. The study did not provide treatment, only measured the device's performance.

This study looked at 41 adults aged 50-90 who had cataract surgery with a special lens that corrects astigmatism. Doctors compared two methods of marking the eye before placing the lens: a digital marker and a conventional manual marker. The goal was to see which method gives bet…

This study compared how well two types of toric contact lenses (Proclear Toric and Biofinity Toric) fit in people with astigmatism. Thirty-seven adults who already wear toric lenses tried each lens for 15 minutes. The goal was to see which lens had a better fit. The study is comp…